body {
font-family: "Source Sans Pro", Helvetica Neue, Helvetica, Arial, sans-serif;
font-size: 16px;
line-height: 1.75;
}
#timeline {
display: flex;
background-color: #031625;
}
#timeline:hover .tl-item {
width: 23.3333%;
}
.tl-item {
position: relative;
width: 25%;
height: 100vh;
min-height: 600px;
color: #fff;
overflow: hidden;
transition: width 0.5s ease;
}
.tl-item:before, .tl-item:after {
content: "";
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
}
.tl-item:after {
background: rgba(3, 22, 37, 0.85);
opacity: 1;
transition: opacity 0.5s ease;
}
.tl-item:before {
background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, black 75%);
z-index: 1;
opacity: 0;
transform: translateY(50%);
transition: opacity 0.5s ease, transform 0.5s ease;
}
.tl-item:hover {
width: 30% !important;
}
.tl-item:hover:after {
opacity: 0;
}
.tl-item:hover:before {
opacity: 1;
transform: translateY(0);
transition: opacity 1s ease, transform 1s ease 0.25s;
}
.tl-item:hover .tl-content {
opacity: 1;
transform: translateY(0);
transition: all 0.75s ease 0.5s;
}
.tl-item:hover .tl-bg {
filter: grayscale(0);
}
.tl-content {
transform: translateY(25px);
position: relative;
z-index: 1;
text-align: center;
margin: 0 1.618em;
top: 55%;
opacity: 0;
}
.tl-content .h1 {
font-family: "Pathway Gothic One", Helvetica Neue, Helvetica, Arial, sans-serif;
text-transform: uppercase;
color: #1779cf;
font-size: 38px;
font-weight: normal;
}
.tl-year {
position: absolute;
top: 50%;
left: 50%;
transform: translateX(-50%) translateY(-50%);
z-index: 1;
border-top: 1px solid #fff;
border-bottom: 1px solid #fff;
}
.tl-year p {
font-family: "Pathway Gothic One", Helvetica Neue, Helvetica, Arial, sans-serif;
font-size: 1.728rem;
line-height: 0;
}
.tl-bg {
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
background-image: url(https://upload.wikimedia.org/wikipedia/commons/3/3f/Ch%C3%A2teau_du_Saint-Ulrich_%28Ribeauvill%C3%A9%29_%282%29_edited_%281%29.jpg);
background-size: cover;
background-position: center center;
transition: filter 0.5s ease;
filter: grayscale(100%);
}