*{
    margin: 0;
    padding: 0;
    font-family: 'Courier New', Courier, monospace;
    box-sizing: border-box;
}
body{
    background: rgb(184, 184, 184);
}
.timeline{
    position: relative;
    max-width: 1200px;
    margin: 100px auto;
}
.container{
    padding: 10px 50px;
    position: relative;
    width: 50%;
    animation: movedown 1s linear forwards;
    opacity: 0;
    border-radius: 10px;
}
@keyframes movedown{
    0%{
        opacity: 1;
        transform: translateY(-30px);
    }
    100%{
        opacity: 1;
        transform: translateY(0px);
    }
}
.container:nth-child(0){
    animation-delay: 0s;
}
.container:nth-child(1){
    animation-delay: 1s;
}
.container:nth-child(2){
    animation-delay: 2s;
}
.container:nth-child(3){
    animation-delay: 3s;
}
.container:nth-child(4){
    animation-delay: 4s;
}
.container:nth-child(5){
    animation-delay: 5s;
}
.container:nth-child(6){
    animation-delay: 6s;
}
.container:nth-child(7){
    animation-delay: 7s;
}
.container:nth-child(8){
    animation-delay: 8s;
}
.container:nth-child(9){
    animation-delay: 9s;
}
.container:nth-child(10){
    animation-delay: 10s;
}
.text-box{
    padding: 20px 30px;
    background: #fff;
    position: relative;
    border-radius: 6px;
    font-size: 15px;
    text-align: center;
}
.left{
    left: 0;
}
.right{
    left: 49%;
}
.timeline::after{
    content: '';
    position: absolute;
    width: 6px;
    height: 100%;
    background: #fff;
    top: 0;
    left: 50%;
    margin-left: -3px;
    z-index: -1;
    animation: moveline 6s linear forwards;
}
@keyframes moveline {
    0%{
        height: 0;
    }
    100%{
        height: 100%;
    }
}
.text-box h2{
    font-weight: 600;
    font-family: 'Times New Roman', Times, serif;
    text-align: center;
}
.text-box small{
     display: inline-block;
     margin-bottom: 10px;
}
.text-box p{
    font-size: 18px;
}
.left-arrow{
    height: 0;
    width: 0;
    position: absolute;
    top: 28px;
    z-index: 1;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-left: 15px solid #fff;
    right: -15px;
}
.right-arrow{
    height: 0;
    width: 0;
    position: absolute;
    top: 28px;
    z-index: 1;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-right: 15px solid #fff;
  left: -15px;
}
@media screen and (max-width: 600px){
    .timeline{
        margin: 50px auto;
    }
    .timeline::after{
        left: 31px;
    }
    .container{
        width: 100%;
        padding: left 80px;
        padding-right: 25px;
    }
    .text-box{
        font-size: 13px;
    }
    .text-box small{
    margin-bottom: 10px;
    }
    .right{
        left: 0;
    }
    .left-arrow, .right-arrow{
        border-right: 15px solid #fff;
        border-left: 0;
        left: 0;
    }
}
.title h1{
   text-align: center;
   padding: 10px 50px;
   color: #000000;
   border-radius: 10px;
}
.buttons{
    text-align: center;
}
.sentence{
    text-align: center;
    padding: 10px 50px;
    color: #000000;
    border-radius: 2px;
}
.navbar ul{
list-style-type: none;
background-color: grey;
padding: 0px;
margin: 0px;
overflow: hidden;
}
.navbar a{
    
    color: #000000;
    text-decoration: none;
    padding: 15px;
    display: block;
    text-align: center;
}
.navbar a:hover{
    background-color: rgb(121, 121, 121);
}
.navbar li{
    float: left;
}
p{
    text-align: center;
    padding: 10px 50px;
    width: 100%;
    font-family: 'Times New Roman', Times, serif;
}
h3{
    font-family: 'Times New Roman', Times, serif;
    text-align: center;
}
h2{
    font-family: 'Times New Roman', Times, serif;
    text-align: center;
}