.pop-up {
    position: fixed;
    margin: 5% auto !important;
    left: 0;
    right: 0;
    z-index: 200;
}

.box {
    text-align: center;
    margin-left: auto;
    width: auto;
    height: 530px;
    margin-top: 45px;
    margin-right: auto;
    position: relative;
    background: red;
}

.box img {
  height: 100%;
}

.button {
    margin 0 auto;
  background-color: #7CCF29;
    margin-bottom: 33px;
}

.button:hover {
    background-color: #ef4b4b;
    -webkit-box-shadow: 0px 4px 6px 0px rgba(0,0,0,0.1);
    -moz-box-shadow: 0px 4px 6px 0px rgba(0,0,0,0.1);
    box-shadow: 0px 4px 6px 0px rgba(0,0,0,0.1);
}

.close-button {
    transition: all 0.5s ease;
    text-decoration: none;
    position: absolute;
    background-color: ;
    padding: 1.5px 7px;
    right: 0;
    margin-right: 10px;
    margin-top: 9px;
    border-radius: 50%;
    border: 2px solid #fff;
    color: white;
    -webkit-box-shadow: -4px -2px 6px 0px rgba(0,0,0,0.1);
    -moz-box-shadow: -4px -2px 6px 0px rgba(0,0,0,0.1);
    box-shadow: -3px 1px 6px 0px rgba(0,0,0,0.1);
}

.close-button:hover {
    background-color: tomato;
    color: #fff;
}