atm.css

*{
    margin: 0;
    padding: 0;
}
body{
    background-image: url("./images\ \(17\).jpeg");
    background-repeat: no-repeat;
    background-size: cover;
}
header{
    text-align: center;
    font-size: 40px;
    color: #fff;
    animation: header 9s infinite;
}
#container{
    background-color: rgb(64, 62, 62);
    width: 70%;
    height: 75vh;
    border-radius: 7px;
    padding: 40px;
    margin: auto;
    margin-top: 50px;
    box-shadow: 0 0 15px rgb(228, 220, 220);
}
#sub-container{
    padding-top: 70px;
    display: grid;
    grid-template-columns: 50% 50%;
}
button{
    font-size: 18px;
    width: 200px;         
    height: 55px;
    margin-bottom: 15px;
    margin-left: 15px;
    background-color: #fffeff;
    color: #000;
    border: blue;
    border-radius: 10px;
    cursor: pointer;
}
button:hover{
    background-color: rgb(169, 165, 165);
}
b{
    font-size: 1.6em;
    padding-top: 30px;
    color: #fff;
}
#input{
    margin-top: 10px;
    text-align: center;
}
input{
    width: 340px;
    height: 50px;
    outline: none;
    font-weight: 700;
    padding-left: 20px;
    color: #000;
}
input::placeholder{
    color: #000 ;
}
.display{
    font-size: 25px;
}
@keyframes header {
    0%{
        color: rgb(85, 82, 82);
    }
    55%{
        color: #5151e5;
    }
    100%{
        color: #fff;
    }
}
@media only screen and (max-width: 500px) {
    header{
        text-align: center;
        font-size: 25px;
        padding-top: 0;
    }
    #container{
        width: 100%;
        height: 80vh;
        border-radius: 7px;
        padding: 0;
        margin: 0;
        margin-top: 0;
    }
    #sub-container{
        padding-top: 30px;
        padding-left: 10px;
    }
    button{
        width: 150px;
        height: 70px;
        margin-bottom: 10px;
        margin-left: 15px;
        background-color: #fffeff;
        color: #000;
        border: blue;
        border-radius: 5px;
        cursor: pointer;
    }
    button:hover{
        background-color: rgb(169, 165, 165);

    }
    b{
        font-size: 1.6em;
    }
    #input{
        margin-top: 40px;
        text-align: center;
    }
    input{
        width: 250px;
    }
 
}