*{
    box-sizing: border-box;
}

body{
    background: #E9F1F7;
    text-align: center;
}
.main_content
{
    /*background: red;*/
    width: 95%;
    margin: auto;
    padding-bottom: 100px;
}

h1{
    color: black;
}

#div_pedir_nombre{
    background: #E9F1F7;
    border-radius: 20px;
    width: 400px;
    margin: 1em auto;
    padding: 1em;
}

#div_pedir_nombre label{
    font-size: 20px;
    color: black;
    font-weight: bold;
}

#div_pedir_nombre input{
    padding: 5px;
    margin-top: 15px;
    margin-bottom: 15px;
    font-size: 20px;
    text-align: center;
}

#error_nombre_usuario{
    font-weight: bold;
    font-size: 20px;
    color: red;
}

/* estilos botones formulario */
button {
    padding: 9px 17px;
    font-weight: bold;
    line-height: 1;
    color: #444;
    border: none;
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.85);
    background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(#fff), to(#bbb));
    background-image: -moz-linear-gradient(0% 100% 90deg, #BBBBBB, #FFFFFF);
    background-color: #fff;
    border: 1px solid #f1f1f1;
    border-radius: 10px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}
button:hover {
    opacity: 0.85;
    cursor: pointer;
}
button:active {
    border: 1px solid #222;
    box-shadow: 0 0 10px 5px #444 inset; 
}

#juego:not([hidden]){
    margin: 0 auto;
    max-width: 1300px;
    text-align: left;
    display: flex;
    justify-content: space-between;
}

#juego .text-container{
    width: 50%;
}

p, a{
    font-size: 20px;
}

#juego .text-container img{
    max-width: 100%;
}

#juego .formulario{
    width: 45%;
}

#juego .formulario textarea{
    width: 100%;
    resize: vertical;
    padding: 10px;
}

#juego .formulario button{
    width: 100%;
}