*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.login-bg {
    display: flex;
    background-image: url(./img/banner.jpg);
    height: 100vh;
    background-size: cover;
    background-repeat: no-repeat;
    align-items: center;
    justify-content: center;
} 
 .box12 h4 {
    text-align: center;
    color: #ffffff;
}
.box12 {
    margin: auto;
    background: linear-gradient(70deg, #ffa6bc, #3b5cde);
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 425px;
    box-shadow: 0px 0px 10px 2px #ffffff17;
    border-radius: 20px;
}
.login-div {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin: 36px 0;
}
.master a,.company a {
    background: #fff;
    text-decoration: none;
    padding: 11px 19px;
    border-radius: 28px;
    color: #000; 
    font-weight: 600;
}

@media only screen and (max-width:450px) {
    .login-div { 
        gap: 27px; 
        flex-direction: column;
        align-items: center;
    }
}