#imgcap {
    padding-bottom: 2%;
    padding-top: 1%;
    border-bottom: 1px solid #999999;
}
.image_text {
    top: 57%;
    transform: translateY(-50%);
}
#top_pic {
    display: block;
    width: 100%;
    height: 95vh;
    object-fit: cover;
    object-position: 100% 0%;
}
#spaceflight_block1 {
    height: 320px;
    margin: 2.5% 0% 2.5% 0%;
}
#spaceflight_block2 {
    height: 320px;
    margin: 2.5% 0% 2.5% 0%;
}
.introText{
    text-align: center;
    margin-left: 300px;
    margin-right: 300px;
}
*{
    margin: 0;
    padding: 0;
}
.timeline{
    margin: 5em auto;
    max-width: 34.15em;
}
.checkpoint{
    max-width: 34em;
    padding-top: 2em;
    padding-bottom: 2em;
    position: relative;
    font-weight: bolder;
}
.checkpoint div {
    border: 2px solid;
    border-radius: 1em;
    padding: 1.5em;
}
.timeline_year {
    height: 100%;
    background-color: linear-gradient(to bottom, #feca70, #fc924c, #fd401a);
}
.checkpoint p{
    line-height: 27px;
}
.checkpoint:nth-child(odd){
    border-left: 4px solid;
    padding-left: 2em;
    transform: translate(16.89em);
}
.checkpoint:nth-child(even){
    border-right: 4px solid ;
    padding-right: 2em;
    transform: translate(-16.89em);
}
.checkpoint:nth-child(odd)::before,
.checkpoint:nth-child(even)::before {
    content: '';
    background: #888;
    width: 2em;
    height: 3px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
.checkpoint:nth-child(odd)::before{
    left: 0;
}
.checkpoint:nth-child(even)::before{
    right: 0;
}
.checkpoint:nth-child(odd) div::before,
.checkpoint:nth-child(even) div::before{
    content: '';
    background: #fc924c;
    box-shadow: 0 0 0.5em #feca70;
    width: 0.8em;
    height: 0.8em;
    position: absolute;
    top:50%;
    transform: translateY(-50%);
    border-radius: 50%;
}
.checkpoint:nth-child(odd) div::before{
    left: -0.5em;
}
.checkpoint:nth-child(even) div::before{
    right: -0.5em;
}
@media screen and (max-width:1150px) {
    .timeline{
        width: 80vw;
    }
    .timeline .checkpoint{
        width: 100%;
        transform: none;
        padding-left: 0;
        padding-right: 0;
        border: none;
    }
    .timeline .checkpoint::before{
        width: 3px;
        height: 4em;
        top: -2em;
        left: 50%;
        transform: translateX(-50%);
    }
    .timeline .checkpoint div::before{
        top: -0.5em;
        left: 50%;
        transform: translateX(-50%);
    }
}
#imgcap {
    padding-bottom: 2%;
    padding-top: 1%;
    border-bottom: 1px solid #999999;
}
.image_text {
    top: 57%;
    transform: translateY(-50%);
}
#top_pic {
    display: block;
    width: 100%;
    height: 95vh;
    object-fit: cover;
    object-position: 100% 0%;
}
h2{
    text-align: center;
}
.container{
    margin-top: 100px;
}
#index_block1{
    margin-top: 100px;
}

body.light-theme{
    font-weight:600px
}