body {
    margin: 10vh 7.5vw 10vh 7.5vw;

}
.header{
    border-style: solid;
    border-width: 1px;
    cursor: pointer;
    padding: .5em;
    text-align: left;
    outline: none;
    font-size: 1.25em;
}

img{
    width: 100%;
}
.content {
    border-style: solid;
    border-width: 1px;
    padding: .5em;
    font-size: 1.1em;
  }

hr {
    border: 0;
    height: 1px;
}
footer{
    padding: .5em;
    text-align: center;
}
 /* The switch - the box around the slider */
 .switch {
    position: absolute;
    display: inline-block;
    top: 10px;
    right: 10px;
    width: 60px;
    height: 34px;
  }
  
  /* Hide default HTML checkbox */
  .switch input {
    opacity: 0;
    width: 0;
    height: 0;
  }
  
  /* The slider */
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    -webkit-transition: .4s;
    transition: .4s;
  }
  
  .slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    -webkit-transition: .4s;
    transition: .4s;
  }
  
  
  input:checked + .slider:before {
    -webkit-transform: translateX(26px);
    -ms-transform: translateX(26px);
    transform: translateX(26px);
  }
  
  /* Rounded sliders */
  .slider.round {
    border-radius: 34px;
  }
  
  .slider.round:before {
    border-radius: 50%;
  }