#f1_container {
  position: relative;
  margin: 10px auto;
  width: 300px;
  height: 150px;
  z-index: 1;
}

#f1_container {
  perspective: 1000;
}

#f1_card {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: all 1.0s linear;
}

#f1_container:hover #f1_card {
  transform: rotateY(180deg);
  box-shadow: -5px 5px 5px #aaa;
}

.face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

.face.back {
  display: block;
  transform: rotateY(180deg);
  box-sizing: border-box;
  padding: 10px;
  color: black;
  text-align: center;
  background-color: #aaa;
}




/* Full-width input fields */
input[type=text] {
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    box-sizing: border-box;
    font-size: small;
}

/* Set a style for all buttons */
.buttonX {
    background-color: #4CAF50;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    cursor: pointer;
    width: 100%;
}

/* Center the image and position the close button */
.imgcontainer {
    text-align: center;
    margin: 20px 0 12px 0;
    position: relative;
}

.container {
    padding: 10px;
}

/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 60%; /* Full width */
    height: 60%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
    padding-top: 60px;
}

/* Modal Content/Box */
.modal-content {
    background-color: #fefefe;
    margin: 5% auto 15% auto; /* 5% from the top, 15% from the bottom and centered */
    border: 1px solid #888;
    width: 38%; /* Could be more or less, depending on screen size */
}

/* The Close Button (x) */
.close {
    position: absolute;
    right: 25px;
    top: 0;
    color: #000;
    font-size: 35px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: red;
    cursor: pointer;
}

/* Add Zoom Animation */
.animate {
    -webkit-animation: animatezoom 0.6s;
    animation: animatezoom 0.6s
}

@-webkit-keyframes animatezoom {
    from {-webkit-transform: scale(0)}
    to {-webkit-transform: scale(1)}
}

@keyframes animatezoom {
    from {transform: scale(0)}
    to {transform: scale(1)}
}