.panel{
    background-color: #f2f2f2;
    margin: 30px auto 0;
    max-width: 408px;
    border-radius: 10px;
    -webkit-box-shadow: 0px 3px 8px 0px rgba(199,199,199,1);
    -moz-box-shadow: 0px 3px 8px 0px rgba(199,199,199,1);
    box-shadow: 0px 3px 8px 0px rgba(199,199,199,1);
    overflow: hidden;
    padding: 50px;
    box-sizing: border-box;
    position: relative;
    width: 400px;
    height: 395px;
}
.panel.error{
    border-color: red;
}
.logo-block {
    margin-left: -50px;
    margin-top: -50px;
    background: rgba(51, 51, 51, 1);
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 400px;
}
.auth-name {
    font-family: 'Roboto Medium';
    font-size: 24px;
    color: rgba(51, 51, 51, 0.8);
    margin: 30px 0 30px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.panel .form-group input{
    border: 0;
    border-radius: 5px;
    color: black;
    overflow: hidden;
    margin-bottom: 2px;
    display: block;
    width: 100%;
    height: 50px;
    padding-left: 10px;
    font-size: 15px;
    box-sizing: border-box;
    transition: background-color 0.2s, border-color 0.2s;
    box-shadow: none;
}

.panel .form-group input:focus{
    border-color: #99cc33;
    outline: none;
}
input:first-child{
    margin-bottom: 15px;
}

.panel button{
    display: block;
    margin: 33px auto 0;
    border: none;
    width: 122px;
    height: 44px;
    background: rgba(88, 118, 64, 1);
    border-radius: 5px;
    color: white;
    font-weight: 500;
    font-size: 16px;
    text-align: center;
    transition: background-color 0.1s, border-bottom-color 0.1s, transform 0.1s;
    cursor: pointer;
}

.sign-in-error {
    position: absolute;
    font-family: 'Roboto medium';
    color: #e70000;
    bottom: 74px;
    left: 0;
    right: 0;
    text-align: center;
}

@media only screen and (max-width: 550px){
    .panel {
        transform: scale(0.8);
    }
}