.left-side {
    width: 70%;
}

.container-typetext {
    color: white;
    font-size: 48px;
}

.container-typetext > span{
    width: 20%;
    left: 0;
    position: relative;
    font-size: 48px;
}

.container-typetext > .sec-text:before{
    animation: animation-typetext 3s steps(11) infinite;
    background-color: black;
    border-left: 2px solid rgb(60, 120, 240);
    content: "";
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}

@keyframes animation-typetext{
    40%, 60%{
        left: calc(100% + 4px);
    }
    100%{
        left: 0%;
    }
}