*{
    box-sizing: border-box;
}

body{
    background-image:url(../img/pattern.gif) ;
}

#contenedor{
    width: 95%;
    height: 450px;
    margin: auto 20px;
    background-color: grey;
    display: flex;
    flex-wrap: wrap;
    padding: 10px;
    justify-content: space-between;
}

#titulo{
    width: 100%;
    height: 100px;
    background-color: rgb(170, 168, 168);
    text-align: center;
    border-bottom:10px double black;
    font-size: 4em;
    

    
}

#bloque1{
    width: 32%;
    height: 150px;
    background-color: yellow;
    padding: 10px;
    text-align: left;
    font-size: 30px;
    
}

#bloque2{
    width: 32%;
    height: 150px;
    background-color: purple;
    padding: 10px;
    text-align: center;
    font-size: 30px;

}

#bloque3{
    width: 32%;
    height: 150px;
    background-color: red;
    padding: 10px;
    text-align: right;
    font-size: 30px;

}