body{
    background-color: #666999;
    padding:25px;
}
.header{
    text-align: center;
}
#app{
    margin: auto;
}
.header h1{
    background:-webkit-linear-gradient(#fff,#8f70ba);
    -webkit-text-fill-color: transparent;
    -webkit-background-clip: text;
    text-align: center;
    font-weight: 900;
    font-size: 3rem;
    color: #fff;
    margin-bottom: 10px;
}
.container{
    padding: 6px;
    background-color: #fff;
    border-radius: 8px;
    max-width: 500px;
    box-shadow: 0 5px 8px #0000007a;
}
.gallery .activePhoto{
    width: 100%;
    margin-bottom: 5px;
    padding-bottom: 150%;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    border: 2px solid #fff;
    position: relative;
}
.gallery .activePhoto button{
    border:none;
    background-color: transparent;
    font-size: 39px;
    color:#fff;
    opacity: 0.6;
    position: absolute;
    outline: none;
    height: 100%;
}
.gallery .activePhoto button hover{
    opacity: 1;
}
.gallery .activePhoto button.previous{
    padding: 0 1em 0 0.1em;
    left: 0;
    background: linear-gradient(to right,rgba(0,0,0,0.0) 0%,rgba(0,0,0,0,) 100%);
}
.gallery .activePhoto button.next{
    padding:0 0.7em, 0 1em;
    right: 0;
    background:linear-gradient(to right,rgba(0,0,0,0.0) 0%,rgba(0,0,0,0,) 100%);
}
.gallery .thumbnails{
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(140px,1fr));
    grid-gap: 5px;
}
.gallery .thumbnails div{
width: 100%;
border:2px solid #fff;
border-radius: 6px;
outline: 2px solid #fff;
cursor: pointer;
padding-bottom: 95%;
background-size: cover;
background-position:top;
background-repeat: no-repeat;
opacity: 1;
}
.gallery .thumbnails div:hover{
    opacity: 0.8;
}
.gallery .thumbnails div.active{
    outline-color: #5c4084;
    opacity: 1;
}