*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

.container{
    width: 100%;
    background:  #191970;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

form{
    width: 90%;
    max-width: 500px;
    background: #fff;
    padding: 50px 30px 20px;
    position: relative;
    border-radius: 4px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

#plane{
    padding: 20px;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    top: 0;
    transform: translate(-50%,-50%);
    font-size: 26px;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
    background: #fff;
}

form div{
    display: flex;
    align-items: center;
    margin: 10px 0;
    width: 100%;
    position: relative;
}

form div label{
    flex-basis: 28%;
}

form div input, form div textarea{
    outline: none;
    border: none;
    flex-basis: 68%;
    background: transparent;
    padding: 10px 0;
    border-bottom: 1px solid #999;
    color: #333;
    font-size: 16px;
}

::placeholder{
    font-size: 14px;
}

button{
    background: #191970;
    color: #fff;
    margin: 30px auto 10px;
    padding: 10px 40px;
    cursor: pointer;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.7);
    display: block;
}

form div span{
    position: absolute;
    bottom: 12px;
    right: 17px;
    font-size: 14px;
    color: red;

}

#submit-error{
    color: red;
}

form div span i{
    color: seagreen;
}