*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    background: #f3f3f3;
    font-family: 'Open Sans', sans-serif;
}

.small{
    padding: 5px;
}

a{
    text-decoration: none;
}

.contenedor{
    width: 90%;
    max-width: 800px;
    margin: auto;
}

/* Header */

header{
    padding: 40px;
}

header .logo{
    text-align: center;
    margin-bottom: 40px;
}

header .logo p{
    color:#9b9b9b;
}

header form{
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

header .barra-busqueda{
    width: 70%;
    height: 40px;
    line-height: 40px;
    background: #fff;
    padding: 0 20px;
    border-radius: 100px;
    border: none;
    text-align: center;
    font-size: 16px;
}

header .categorias{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

header .categorias a{
    color: #9b9b9b;
    margin: 10px 20px;
    font-size: 18px;
    font-weight: 700;
}

header .categorias a.activo{
    color: #000;
}

/* Grid Productos */

.grid{
    position: relative;
    width: 100%;
    opacity: 0;
    transition: opacity 0.5s linear 1s;
}

.btn{
    display: flex;
    margin-top: 5px;
    width: 100%;
}

.grid.imagenes-cargadas{
    opacity: 1;
}

.grid .item{
    position: absolute;
    display: block;
    padding: 0;
    margin: 10px;
    width: calc(33.33% - 20px);
}

.grid .item-contenido{
    position: relative;
}

.grid .item img{
    width: 100%;
    cursor: pointer;
    vertical-align: top;
    border-radius: 7px;
}

/*Footer */
footer .redes-sociales{
    display: flex;
    align-content: center;
    justify-content: center;
    padding: 20px;
    flex-wrap: wrap;
}

footer .redes-sociales a{
    display: block;
    width: 60px;
    background: #000;
    color: #fff;
    margin: 20px;
    text-align: center;
    border-radius: 100px;
    transition: .3s ease all;
}

footer .redes-sociales a:hover{
    width: 65px;
}

footer .redes-sociales .twitter{background: #1da1f2;}
footer .redes-sociales .facebook{background: #3b5998;}
footer .redes-sociales .instagram{background: #c13584;}

footer .creado-por {
    margin-bottom: 40px;
    text-align: center;
    font-size: 14px;
    color: #3b5998;
}

footer .creado-por a:hover{color: #000;} 

/*Mediaqueries*/
@media screen and (max-width: 700px){
    .grid .item{
        width: calc(50% - 20px);
    }
    header .barra-busqueda{
        width: 100%;
    }
}