当我调整我的屏幕大小到一个较小的视图，如手机视图，有这个奇怪的白色框出现在下面，它变得更长，我使宽度越小。有谁知道是什么原因导致的吗？我为这个页面提供了所有的CSS和HTML。
使用pesticide chrome扩展，我可以看到白色是HTML元素。我不确定这是否有帮助。这里也是我所指的白色区域的屏幕截图。

html {
  height: 100%;
}

.websiteNav {
  width: 100%;
  height: 20%;
  background-color: hsla(0, 0%, 100%, 0.801);
  z-index: 1;
}

.websiteNavOptions {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  height: 80%;
  font-family: 'Quicksand', sans-serif;
  gap: 5%;
}

.logo {
  font-size: 3vw;
  margin-left: 5%;
  font-weight: 700;
}

.homeitem {
  margin-left: 2%;
  font-size: 2vw;
}

.reviewbutton {
  margin-top: 0.5%;
  margin-left: 40vw;
}

li {
  list-style-type: none;
}

a {
  text-decoration: none;
}

h1 {
  font-family: 'Quicksand', sans-serif;
  padding: 3%;
  font-size: 3vw;
}

p {
  font-family: 'Quicksand', sans-serif;
  padding: 3%;
  font-size: 2vw;
}

.container {
  display: flex;
  justify-content: center;
  height: 150%;
  width: 100%;
  background-image: url(/images/6398749.png);
  background-position: center;
  background-size: cover;
}

.white-rectangle {
  display: flex;
  justify-content: flex-start;
  flex-direction: column;
  background-color: #ffffff;
  max-width: 40%;
  height: 150%;
}

.userInfo {
  font-size: 1.2vw;
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  margin-left: 5%;
  gap: 1em;
  font-family: 'Quicksand', sans-serif;
}

#userNameTextBox {
  width: 60%;
  font-size: 1.5vw;
  font-family: 'Quicksand', sans-serif;
}

#schoolNameTextBox {
  width: 59%;
  font-size: 1.5vw;
  font-family: 'Quicksand', sans-serif;
}

.userNameGroup {
  display: flex;
  gap: 1vw;
}

.schooNameGroup {
  display: flex;
  gap: 1vw;
}

.Questions {
  font-family: 'Quicksand', sans-serif;
  max-width: 100%;
  display: flex;
  justify-content: flex-start;
  flex-direction: column;
  padding: 5%;
  font-size: 1vw;
}

.option {
  width: 100%;
  height: 50%;
  margin: 3%;
  margin-left: 10%;
  padding: 2%;
  display: flex;
  align-items: center;
  font-size: 1.5vw;
  position: relative;
  max-width: 90%;
}

.option input {
  display: none;
}

.option label {
  cursor: pointer;
  margin-left: 5%;
}

.option label::after {
  content: "";
  position: absolute;
  right: 100%;
  top: 30%;
  width: 5%;
  height: 50%;
  border: .17vw solid black;
  border-radius: 50%;
  box-shadow: 0 0 0.10vw rgba(0, 0, 0, 0.8);
}

.option label::before {
  content: "";
  position: absolute;
  right: 101%;
  top: 40%;
  width: 4%;
  height: 40%;
  background-color: rgb(76, 76, 160);
  border-radius: 50%;
  box-shadow: 0 0 0.10vw rgba(0, 0, 0, 0.8);
  opacity: 0;
  transition: opacity 0.4s;
}

.option input:checked~label::before {
  opacity: 1;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.button {
  display: inline-block;
  text-decoration: none;
  padding: 0.76vw 4vw;
  color: white;
  background-image: linear-gradient(45deg, rgb(124, 238, 200), rgb(45, 126, 99));
  font-size: .80vw;
  border-radius: 30px;
}

.bottombutton {
  display: flex;
  justify-content: flex-end
}

.bottom {
  margin-right: 20%;
  border: 0;
}

.review {
  width: 100%;
}

.finishbottombutton {
  display: flex;
  justify-content: center;
}

.matchcontainer {
  display: flex;
  justify-content: center;
  margin-top: 5%;
  font-size: 20px;
}

.matchbackground {
  background-color: rgb(255, 255, 255);
  border-radius: 10%;
  height: 80vh;
  width: 70%;
  max-width: 1200px;
  min-height: 750px;
}

.matchcontent {
  display: flex;
  flex-direction: column;
  height: 50vh;
  align-items: center;
  justify-content: center;
}

#studentImage {
  width: 45%;
  height: 40%;
  margin: 10px;
  object-fit: contain;
  margin-bottom: 20px;
}

.imgAndContact {
  display: flex;
  justify-content: center;
  gap: 3vh;
}

.matchTextContent {
  display: flex;
  flex-direction: column;
  font-size: 1.5vw;
}

#congratsmessage {
  font-size: 3vw;
  font-weight: 700;
}

#student {
  font-size: 5vw;
  font-weight: 200;
  margin: 2%;
  letter-spacing: 2vw;
}

#datatest {
  font-size: 2vw;
  ;
  word-spacing: 3vw;
}

}

<nav class="websiteNav">
  <ul class="websiteNavOptions">
    <li class="logo"><a href="https://www.mydorm.com/">myDORM</a></li>
    <li class="homeitem"><a href="https://www.mydorm.com/" class="homelink">Home</a></li>
    <li class="reviewbutton"><a href="https://www.mydorm.com/colleges/dorm/photo/" class="button review">Leave a Review!</a></li>
  </ul>
</nav>

<div class="container">

  <div class="white-rectangle">

    <h1>Complete Survey Below </h1>
    <p> The survey below is calibrated with our state of the art technology that picks the perfect roommate 100% of the time.</p>

    <div class="userInfo">

      <div class="serNameGroup">
        <label for="userNameTextBox">Name:</label>
        <input type="text" id="userNameTextBox" placeholder="Enter Full Name" maxlength="20">
      </div>

      <div class="chooNameGroup">
        <label for="schoolNameTextBox"> School:</label>
        <input type="text" id="schoolNameTextBox" placeholder="Enter School Name" maxlength="35">
      </div>
    </div>

    <div class="Questions">
      <h2> Question 1: Which of the following choices best matches the description of your sleep schedule</h2>
      <div class="option">
        <input type="radio" id="Question1Choice1" name="Q1" value="Q1Answer1">
        <Label for="Question1Choice1">Go to sleep early, wake up early</Label>
      </div>
      <div class="option">
        <input type="radio" id="Question1Choice2" name="Q1" value="Q1Answer2">
        <Label for="Question1Choice2">Go to sleep late, wake up early</Label>
      </div>

      <div class="option">
        <input type="radio" id="Question1Choice3" name="Q1" value="Q1Answer3">
        <Label for="Question1Choice3">Go to sleep early, wake up late</Label>
      </div>
      <hr width="95%" />
    </div>

    <div class="Questions">
      <h2>Question 2 : Which of the following best matches your cleanliness. </h2>
      <div class="option">
        <input type="radio" id="Question2Choice1" name="Q2" value="Q2Answer1">
        <Label for="Question2Choice1">Dirty</Label>
      </div>
      <div class="option">
        <input type="radio" id="Question2Choice2" name="Q2" value="Q2Answer2">
        <Label for="Question2Choice2">In the Middle</Label>
      </div>

      <div class="option">
        <input type="radio" id="Question2Choice3" name="Q2" value="Q2Answer3">
        <Label for="Question2Choice3">Clean</Label>
      </div>
      <hr width="95%" />
    </div>

    <div class="Questions">
      <h2> Question 3: What is your preffered room temperature</h2>
      <div class="option">
        <input type="radio" id="Question3Choice1" name="Q3" value="Q3Answer1">
        <Label for="Question3Choice1">Cold</Label>
      </div>
      <div class="option">
        <input type="radio" id="Question3Choice2" name="Q3" value="Q3Answer2">
        <Label for="Question3Choice2">Comfortable</Label>
      </div>

      <div class="option">
        <input type="radio" id="Question3Choice3" name="Q3" value="Q3Answer3">
        <Label for="Question3Choice3">Warm</Label>
      </div>
      <hr width="95%" />
    </div>

    <div class="Questions">
      <h2> Question 4: How comfortable do you feel sharing your belongings.</h2>
      <div class="option">
        <input type="radio" id="Question4Choice1" name="Q4" value="Q4Answer1">
        <Label for="Question4Choice1">Dont touch my stuff!</Label>
      </div>
      <div class="option">
        <input type="radio" id="Question4Choice2" name="Q4" value="Q4Answer2">
        <Label for="Question4Choice2">If you ask. </Label>
      </div>

      <div class="option">
        <input type="radio" id="Question4Choice3" name="Q4" value="Q4Answer3">
        <Label for="Question4Choice3">My stuff is your stuff!</Label>
      </div>
      <hr width="95%" />
    </div>

    <div class="Questions">
      <h2>Question 5: What is your preffered time to shower</h2>
      <div class="option">
        <input type="radio" id="Question5Choice1" name="Q5" value="Q5Answer1">
        <Label for="Question5Choice1">In the morning.</Label>
      </div>
      <div class="option">
        <input type="radio" id="Question5Choice2" name="Q5" value="Q5Answer2">
        <Label for="Question5Choice2">I am flexable, i have no preference</Label>
      </div>

      <div class="option">
        <input type="radio" id="Question5Choice3" name="Q5" value="Q5Answer3">
        <Label for="Question5Choice3">At night</Label>
      </div>
      <hr width="95%" />
    </div>

    <a class="ottombuttoncont" href="secondpagesurvey.html">
      <div class="bottombutton">
        <button class="bottom button" id="testbutt"> Continue to Next Page...</button>
      </div>
    </a>
  </div>