body{
    background: url(../images/fondo.webp) no-repeat center center;
    background-size: cover;
    font-family: 'Montserrat', sans-serif;
}

.chat{
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    width: 60px;
}
.chat img{
    width: 100%;
}
.chat span{
    position: absolute;
    top: 12px;
    left: -370%;
    border: 0px solid red;
    background: white;
    font-weight: bold;
    color: gray;
    padding: 4px 10px;

    border-radius: 10px;

    box-shadow: 2px 0px 10px gray;
}


.cintillo-ayuda{
    position: relative;
    border: 0px solid red;
    height: 38px;
}

.cintillo{
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    background: #ddd;
    padding-top: 7px;
    padding-bottom: 7px;
}
.cintillo img{
    width: 30px;
}


header{
    padding-top: 20px;
    padding-bottom: 20px;
}

.logotipo{
    text-align: center;
}
.logotipo img{
    width: 100%;
}


nav a{
    color: black;
    text-decoration: none;
}

nav ul{
    list-style: none;
    padding: 0;
}

nav ul li{
    width: 20%;
    float: left;
}

.menu-r{
    display: none;
}

.menu, .menu-r{
    background: #f7f7f7;
    text-align: center;
    font-size: 20px;
    color: #324e8b;
    padding: 7px 0;
    cursor: pointer;
}
.menu:hover, .menu-r:hover{
    background: black;
    color: white;
    font-weight: bold;
}

.redes img{
    width: 30px;
}


.efecto{
    padding: 0;
    margin-bottom: 30px;
}

.seccion{
    background: rgb(2,0,36);
    background: linear-gradient(90deg, rgba(2,0,36,1) 0%, rgba(9,9,121,1) 50%, rgba(50,78,139,1) 100%);
    color: white;
    font-size: 20px;
    padding: 80px 40px;
}
.seccion strong{
    width: 100%;
    text-shadow: 2px 2px 2px black;
    margin-bottom: 20px;
    display: inline-block;
}

.img1{
    background: url(../images/construccion-de-torres-de-enfriamiento.webp) no-repeat center center;
    background-size: cover;
}
.img2{
    background: url(../images/mantenimiento-correctivo-de-torres-de-enfriamiento.webp) no-repeat center center;
    background-size: cover;
}
.img15{
    background: url(../images/fabricacion-de-torres-de-enfriamiento.webp) no-repeat center center;
    background-size: cover;
}
.img16{
    background: url(../images/torres-de-enfriamiento.webp) no-repeat center center;
    background-size: cover;
}
.img17{
    background: url(../images/refacciones-y-componentes-para-torres-de-enfriamiento.webp) no-repeat center center;
    background-size: cover;
}
.img22{
    background: url(../images/crossflow-mexico.webp) no-repeat center center;
    background-size: cover;
}
.img23{
    background: url(../images/trabajos-en-torres-de-enfriamiento.webp) no-repeat center center;
    background-size: cover;
}


.contenido{
    padding-top: 30px;
    padding-bottom: 30px;
}

.card-title{
    text-align: center;
    font-weight: bold;
    font-size: 24px;
    margin-bottom: 0;
}
.card-img-top{
    border: 0px solid red;
}


.form-group{
    margin-bottom: 20px;
}


.titulo{
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    color: #3b5998;
    margin-bottom: 30px;
}


footer{
    background: black;
    color: white;
    font-size: 20px;
    line-height: 30px;
    padding-top: 30px;
    padding-bottom: 30px;
}
footer strong{
    width: 100%;
    margin-bottom: 20px;
    display: inline-block;
}
footer a, footer a:hover{
    color: white;
}
footer img{
    width: 35px;
}


@media screen and (max-width:1400px){

}

@media screen and (max-width:1200px){
    .cintillo-ayuda{
        display: none;
    }
    .cintillo{
        position: relative;
    }
}

@media screen and (max-width:992px){
    .logotipo img{
        width: 60%;
    }
}

@media screen and (max-width:768px){
    .menu-r{
        display: block;
    }
    nav ul{
        display: none;
    }
    nav ul li{
        width: 100%;
    }
    .img{
        height: 300px;
    }

    .redes{
        margin-top: 20px;
    }
}

@media screen and (max-width:576px){
    .logotipo img{
        width: 100%;
    }
}