* {
    box-sizing: border-box;
}

html {
    height: 100%;
}
body {
    padding: 0;
    margin: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Roboto', sans-serif;
    background: url('../images/bg.png') no-repeat center center;
    background-size: cover;
    background-color: #1f2128;
}

.form-box {
    width: 400px;
    max-width: calc(100% - 20px);
    padding: 50px 30px;
    background: #202124;
    border: solid 1px #323232;
    box-shadow: 0px 0px 25px rgb(0 0 0 / 30%);
}

.form-box form {
    margin-bottom: 0;
}

.form-box h1 {
    text-align: center;
    margin-top: 0;
    color: #ececec;
    font-weight: normal;
    font-size: 25px;
    margin-bottom: 30px;
}

.form-box .form-ins {
    display: flex;
}

.form-box .form-control {
    flex-grow: 1;
}

.form-box .form-control input {
    height: 45px;
    line-height: 45px;
    font-size: 16px;
    padding: 10px 15px;
    background: #ececec;
    border: solid 1px #dbdbdb;
    flex-grow: 1;
    width: 100%;
}

.form-box input[type='submit'] {
    background-color: #019f4d;
    color: #fff;
    border: 0;
    padding: 10px 30px;
    font-size: 16px;
    height: 45px;
    cursor: pointer;
    transition: all 0.2s;
}

.form-box input[type='submit']:hover {
    background-color: #019f4d;
}

.form-box input[type='submit']:focus {
    background-color: #fff;
    color: #007fff;
}

.form-box input[type='submit']:disabled {
    opacity: 0.5;
    cursor: default;
}

.form-box .error {
    color: red;
    margin-top: 10px;
}