body{
    background: #eceff1;
}

.contain{
    margin: auto;
    margin-top: 100px;
    width: 524px;
    height: 300px;
    align-content:center;
    background-color: #cfd8dc;
    border:thin;
    border-radius: 8px;
    border: 1px solid #546e7a;
    box-shadow: 0 0 15px #546e7a;
}
.login-field {
    border: thin;
    border-bottom-right-radius: 5px;
    border-top-right-radius: 5px;
    position: relative;
    left: 43px;
    height: 38px;
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    color: #3b5053;
    font-size: 18px;
    /*font-weight: 700;*/
}
.login-field:focus{
    border: 1px solid #546e7a;
    box-shadow: 0 0 10px #546e7a;
}

.username-span{
    position: absolute;
    left: auto;
    width: 45px;
    height: 40px;
    border-bottom-left-radius: 5px;
    border-top-left-radius: 5px;
    /* background-color: #3394a3; */
    background-color: #b0bec5;
    background-image: url(../imagenes/usericon_.png);
    background-repeat: no-repeat;
    background-position: center;
}
.password-span{
    position: absolute;
    left: auto;
    width: 45px;
    height: 40px;
    border-bottom-left-radius: 5px;
    border-top-left-radius: 5px;
    background-color: #b0bec5;
    background-image: url(../imagenes/lock.png);
    background-repeat: no-repeat;
    background-position: center;
}
.ti{
    text-align:center;
    font-size:25px;
    /* font-weight:bolder;*/
    font-family: Arial, Helvetica, sans-serif;
    color: #5d6d7e;
}
.login{
    cursor: pointer;
    color: #FFFFFF;
    border-radius: 5px;
    padding: 10px;
    border: thin #C1DBFF;
    background-color: #546e7a;
    -o-transition: all .5s;
    -moz-transition: all .5s;
    -webkit-transition: all .5s;
    -ms-transition: all .5s;
}
.login:hover{
    border: solid 1px #546e7a;
    background-color: #cfd8dc;
    color: black;
}
.login:active{
    background-color: #f5eef8;
    border: solid 1px #5d6d7e;
    color: #5d6d7e;
}
.login:disabled{
    background-color: #a0c0c5;
}
.error{
    position:relative;
    color: #eaadad;
    background-color: #ff6666;
    border-color: #cc6666;
    background-image: url(../imagenes/close.png);
    background-repeat: no-repeat;
    background-position: 3px;
    width: 150px;
    height: 40px;
    border-radius: 5px;
    text-align: center;
    font-family: PTSans;
    font-size: 18px;
    font-weight: 700;
}

@media screen and (max-width: 800px){
    .contain{
        height: 400px;
        max-width: 95%;
        margin-top: 10px;
        padding-top: 50px; 
    }
  
    .login-field{
        max-width: 90%;
        margin-top: 10px;
    }
    
    .username-span, .password-span{
         margin-top: 10px;
    }
    
    .login{
        margin-top: 15px;
    }
}