html, body {
    margin: 0;
    height: 100%;
    background-repeat: no-repeat;
    overflow-y: hidden;
    background-color: #F7A800;
  }
  #clearButton {
    border: solid black 2px;
    font-weight: bold;
    margin: 10px auto 20px auto;
    padding: 7px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 15px;
  }
#clearButton:hover{
    background-color: #F7A800;
  }
#unit {
    display: table;
    margin: 0 auto;
    margin-top: 2px;
  }
#title {
    text-decoration: underline;
  }
#content {
    margin: 50px auto 0 auto;
    width: 600px;
    border: solid 5px;
    font-family: sans-serif;
    background: url('https://c2.staticflickr.com/8/7248/7501404260_e29f728a4a_b.jpg');
    text-align: center;
  }
h1 {
    font-size: 28px;
  }
input {
    width: 80px;
    padding: 5px 10px;
    border-radius: 5px;
    border: solid 2px;
    text-align: center;
    font-size: 17px;
  }
label {
    cursor: pointer;
    display: block;
    width: 100%;
    text-align: right;
    margin: 20px auto 40px auto;
    font-weight: bold;
}
@media (max-width: 425px) {
    #content {
        margin-top: 43px;
      width: 345px;
    }
}