body {
    background-color: #F6F6F6;
}
#logos {
    position: absolute;
    left: 50%;
    margin: 100px 0 0 -250px;
}

img {
    display: block;
    width: 500px;
    height: 100px;
}

#formConectarme {
    position: absolute;
    margin: -160px 0 0 -160px;
    width: 320px;
    height: 320px;
    top: 50%;
    left: 50%;
}

h1 {
    text-align: center;
    font-size: 70px;
    margin-bottom: 35px;
}

#codigoSesionISL {
    outline: none;
    display: block;
    font-weight: inherit;
    text-align:center;
    font-family:inherit;
    font-size:25px;
    margin: 10px auto;
    width: 200px;
    font-weight: bolder;
}

input:focus {
    box-sizing: border-box;
  border: 2px solid #00a39c;
  -webkit-transition: 0.5s;
  transition: 0.5s;
}

#btnAceptar {
    border: 2px solid black;
    background-color: #ce0000;
    display: block;
    margin: 20px auto;
    text-align: center;
    width: 150px;
    font-size: 20px;
    font-weight: bold;
}

#btnAceptar:hover{
    background-color: #00a39c;
     -webkit-transition: 0.65s;
  transition: 0.65s;
    border: 2px solid black;
}