* {
    box-sizing: border-box;
}

form {
    border: 3px solid #f1f1f1;
}

input[type=text], input[type=password] {
    width: 100%;
    padding: 15px;
    margin: 5px 0 22px 0;
    display: inline-block;
    border: none;
    background: #f1f1f1;
}

input[type=text]:focus, input[type=password]:focus {
    background-color: #ddd;
    outline: none;
}

hr {
    border: 1px solid #f1f1f1;
    margin-bottom: 25px;
}

.signup-btn {
    float: left;
    width: 100%;
}

.container {
    padding: 16px;
}

.clearfix::after {
    content: "";
    clear: both;
    display: table;
}

.text-align-center {
	text-align: center;
}

@media screen and (max-width: 300px) {
    .signup-btn {
       width: 100%;
    }
}