index.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

.section{
    width: 100%;
    min-width: 100vh;
    background-color: #0F3D3E;
}

.aboutContainer{
    width: 80%;
    display: block;
    margin: auto;
    padding-top: 100px;
}

.content-section{
    float: left;
    width: 55%;
}

.image-section{
    float: right;
    width: 35%;
}

.image-section img{
    width: 100%;
    height: auto;
    border-radius: 30px;
    margin-top: 15px;
}

.content-section .title{
    text-transform: uppercase;
    font-size: 25px;
    /* text-align: center; */
}
.content-section .content h1{
    margin-top: 12px;
    font-size: 29px;
    color: cadetblue;
}
.content-section .content h3{
    color: #493737;
    font-size: 22px;
}
.content-section .content p{
    margin-top: 12px;
    font-family: sans-serif;
    font-size: 17px;
    line-height: 1.2;
}
.content-section .content .button{
    margin-top: 35px;
    /* margin-left: 140px; */
}
.content-section .content .button a{
    background-color: black;
    padding: 8px 20px;
    text-decoration: none;
    color: #fff;
    font-size: 23px;
    letter-spacing: 1.5px;
    border-radius: 40px;
}

.content-section .content .button a:hover{
    background-color: #0F3D3E;
    color: #fff;
    cursor: pointer;
}
.content-section .social{
    margin-top: 45px;
    display: flex;
}
.content-section .social i{
    width: 37px;
    height: 39px;
    border-radius: 5px;
    background: linear-gradient(45deg, #1abc9c, #149279);
    color: #fff;
    text-align: center;
    line-height: 35px;
    margin-right: 0.7rem;
    transition: .3s;
}
.content-section .social i:hover{
    transform: scale(1.5);
}

@media screen and (max-width: 700px) {
    .aboutContainer{
        width: 80%;
        display: block;
        margin: auto;
        padding-top: 50px;
    }
    .content-section{
        float: none;
        width: 100%;
        display: block;
        margin: auto;
    }
    .content-section .content h1{
        margin-top: 12px;
        font-size: 60px;
        color: rgb(12, 88, 67);
    }
    .content-section .content h3{
        font-size: 39px;
        color: rgb(8, 109, 152)
    }
    .image-section{
        float: none;
        width: 100%;
        display: block;
        margin: auto;
        margin-top: 30px;
    }
    .content-section .social i:hover{
        transform: scale(0.5);
    }
    .content-section .title{
        text-align: center;
        font-size: 30px;
    }
    .content-section .content .button{
        text-align: center;
    }
}