*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    background-image: url(../img/fondo.jpeg);
    width: 100%;
    height: 100%;
    background-position: center center;
    background-repeat: no-repeat;
}

#container{
 
    width: 100%;
    height: 100vh;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid white;
    border-radius: 25px
}
#container form{
   background: #fff;
    width: 500px;
    padding: 10px;
}
#container form img{
    margin: 15px auto;
    text-align: center;
    display: block;
    
}
#container form input{
    width: 100%;
    padding: 5px;
    font-size: 16pt;
    display: block;
    margin: 5px auto;
    border: 2px solid black;
    border-radius: 5px
}
#container form input[type="submit"]{
   background: #52be80;
   padding: 10px;
   color: #fff;
   letter-spacing: 1px;
   border: 0;
   cursor: pointer;
}
h3{
    font-family: 'Arial';
    font-size: 25pt;
    letter-spacing: 1px;
    width: 100%;
    background: #2980b9;
    color: #fff;
    text-align: center;
    text-transform: uppercase;
}

.alert{
    font-family: 'Arial';
    font-size: 16px;
    text-align: center;
}