#introduction{max-width:1200px;width:100%;margin-bottom:150px;padding-top:30px;}
.text1{text-align: center;
margin: 100px 0;}

.b-btn {
    background: #000;
    border-radius: 4px;
    width: 95%;
    max-width: 400px;
    margin: 0 auto;
}
.b-btn p {
    color: #fff;
    padding: 25px 0;
    line-height: 1;
    font-size: 20px;
}

@media (max-width:1279px){
    #introduction{padding: 30px .625rem .625rem;margin-bottom:30px;}
    .text1{text-align: left;}
    .b-btn p {
        padding: 20px 0;
        font-size: .8rem;
    }
}