style.css

/* reset css */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header{
    width: 100%;
    height: 75px;
    display: flex;
    background-color: black;
    color: white;
    justify-content: space-between;
    align-items: center;
    padding: 0px 20px;
}

.logo{
    width: 75px;
    height: 75px;
}
.logo img{
    width: 100%;
}

ul{
    list-style: none;
}

nav ul{
    display: flex;
    gap: 50px;
}

.mainContainer{
    width: 100%;
    height: calc(100vh - 75px);
    display: flex;
}

.leftSide{
    width: 50%;
    height: 50%;
    padding: 50px 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}
.rightSide{
    width: 50%;
    height: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.primaryButton{
    text-decoration: none;
    width: 50%;
    text-align: center;
    padding: 10px 30px;
    border-radius: 8px;
    background-color: #66B0F0;
    color: white;
    transition: all 0.3s linear;
}

.primaryButton:hover{
    border: 1px solid #66B0F0;
    background-color: white;
    color: #66B0F0;
}

.rightImg{
    animation-name: move;
    animation-duration: 2s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

@keyframes move {
    0%{
        margin-bottom: 0px;
    }
    50%{margin-bottom: 50px;}
    100%{
        margin-bottom: 0px;
    }
}