*{
    box-sizing: border-box;
}
body{
    height: 100vh;
    background-color: rgb(230, 230, 230);
    display: flex;
    align-items: center;
    justify-content: center;
}
.form{
    width: 420px;
    min-height: 520px;
    padding-top: 60px;
    background-color: rgb(230, 230, 230);
    border: rgb(255, 255, 255) 3px solid;
    border-radius: 0px 50px 0px 50px;
    box-shadow: 10px 10px 15px 5px rgba(119, 119, 119, 0.3),
                -15px -15px 20px 5px rgba(255, 255, 255, 0.8),
                inset 5px 5px 20px 5px rgba(119, 119, 119, 0.3),
                inset -15px -15px 20px 5px rgba(255, 255, 255, 0.8);
}
.top-text, .username, .password, .submit,.username2{
    display: block;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    outline: none;
}
.top-text{
    font-size: 2em;
}
.username, .password,.username2{
    font-size: 15px;
    margin-top: 30px;
    padding: 15px;
    background-color: rgb(233, 231, 231);
    width: 350px;
    border-radius: 30px;
    border: solid 3px rgb(255, 255, 255);
    box-shadow: inset 10px 10px 20px 0px rgba(119, 119, 119, 0.3),
                inset -10px -10px 20px 0px rgba(255, 255, 255, 0.8),
                15px 15px 20px 5px rgba(119, 119, 119, 0.3),
                -15px -15px 20px 5px rgba(255, 255, 255, 0.8);
                text-align: left;
}
.submit{
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 20px;
    padding: 8px 15px;
    margin-top: 50px;
    background-color: rgb(233, 231, 231);
    transition: 0.5s;
    border: solid 3px rgba(255, 255, 255, 0);
    border-radius: 30px;
    color: rgb(0, 0, 0);
    text-shadow: 0 0 1px rgb(68, 68, 68);
}
.submit:hover{
    border: solid 3px rgb(255, 255, 255);
    box-shadow: 15px 15px 20px 5px rgba(119, 119, 119, 0.3),
                -15px -15px 20px 5px rgba(255, 255, 255, 0.8);
}
.navbar-brand{
    width: 40%;display: block;
    margin-left: auto;
    margin-right: auto;
}
a{text-decoration: none;}