body {
    margin: 0;
    padding: 0;
    font-family: "arial", heletica, sans-serif;
    font-size: 12px;
    background: #2980b9 url('https://static.tumblr.com/03fbbc566b081016810402488936fbae/pqpk3dn/MRSmlzpj3/tumblr_static_bg3.png') repeat 0 0;
    -webkit-animation: 10s linear 0s normal none infinite animate;
    -moz-animation: 10s linear 0s normal none infinite animate;
    -ms-animation: 10s linear 0s normal none infinite animate;
    -o-animation: 10s linear 0s normal none infinite animate;
    animation: 10s linear 0s normal none infinite animate;

}

@-webkit-keyframes animate {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 500px 0;
    }
}

@-moz-keyframes animate {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 500px 0;
    }
}

@-ms-keyframes animate {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 500px 0;
    }
}

@-o-keyframes animate {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 500px 0;
    }
}

@keyframes animate {
    from {
        background-position: 0 0;
    }

    to {
        background-position: 500px 0;
    }
}

.containner {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    font-family: 'Mukta', sans-serif;
}

.box {
    width: 450px;
    height: 450px;


}

.form {
    background-color: rgba(8, 35, 185, 0.685);
    margin: auto;
    width: 450px;
    height: 480px;
    padding-top: calc(0.375rem + 1px);
    padding-bottom: calc(0.375rem + 1px);
    margin-bottom: 0;
    font-size: inherit;
    line-height: 1.5;
    border-radius: 30px;
    text-align: center;
    color: blanchedalmond;
    font-weight: bolder;
    font-size: 2m;
    font-family: 'Mukta', sans-serif;

}

legend {
    margin: 20px auto;
    font-size: 1.0rem;
}

.login {

    font-size: 2.1rem;
    text-decoration: underline;
    font-family: 'Mukta', sans-serif;
    font-weight: lighter;
}

@media (min-width: 279px) and (max-width: 359px) {
    .box {
        margin: auto;
        width: 250px;
        height: 230px;   
        display: flex;
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 360px) and (max-width: 500px) {
    .box {
        margin: auto;
        width: 350px;
        height: 350px;   
        display: flex;
        flex-direction: row;
        justify-content: center;
    }
}