.master-gl-unique h2 {
  text-align: center;
  font-family: 'Rion-Bold', serif;
  font-size: 37px;
  line-height: 44px;
  margin: 0;
}

.master-gl-unique .click-txt {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  font-size:13px;
}
.master-gl-unique  .click-txt img {margin-right: 20px;}
.flex-glu {
  display: flex;
  width: 70%;
  max-width: 980px;
  margin: 30px auto 0;  
}
.flex-glu .glu-sx, .flex-glu .glu-dx {
  flex-basis: 25%;
  display: flex;
  flex-flow: column wrap;
  justify-content: space-evenly;  
  position: relative;
}
.flex-glu .glu-sx {
  text-align: right;
  z-index: 9;
}
.flex-glu .glu-center {
  flex-basis: 50%;
  text-align: center;
}

.flex-glu .glu-sx .glu-content h3, .flex-glu .glu-dx .glu-content h3 {
  position: relative;
  font-family: 'Rion-Bold', serif;
  font-size: 30px;
  line-height: 37px;
}
.flex-glu .glu-sx .glu-content h3:after {
  content: url(https://cdn2.hubspot.net/hubfs/6067721/slettore_vuoto.png);
  position: absolute;
  margin-left: 20px;
  height: 28px;
  margin-top: 5px;  
}
.flex-glu .glu-sx .glu-content.p-2 h3:after {
  display: none;
}
.flex-glu .glu-sx .sopra:hover h3:after {
  content: url(https://cdn2.hubspot.net/hubfs/6067721/selettore-pieno.png);
  position: absolute;
  margin-left: 20px;
  height: 28px;
  margin-top: 5px;  
}
.flex-glu .glu-dx {
  z-index: 9;
}
.flex-glu .glu-dx .glu-content h3:before {
  content: url(https://cdn2.hubspot.net/hubfs/6067721/slettore_vuoto_dx.png);
  position: absolute;
  left: -155px;
  height: 28px;
  margin-top: 5px;
}
.flex-glu .glu-dx .sopra:hover h3:before {
  content: url(https://cdn2.hubspot.net/hubfs/6067721/selettore-pieno_dx.png);
  position: absolute;
  left: -155px;
  height: 28px;
  margin-top: 5px;
}

		.glu-image img:hover { cursor: zoom-in; }
		.glu-image img:active { cursor: zoom-in; }

.evidenzia:after {
  content: "";
  position: absolute;
  background: #000;
  width: 100%;
  height: 2px;
  left: 0;  
  bottom: -5px; 
  visibility: hidden;
  -webkit-animation: myani 3s;  /* Safari 4.0 - 8.0 */
  -webkit-animation-iteration-count: 1; /* Safari 4.0 - 8.0 */
  animation: myani 3s;
  animation-iteration-count: 1;
}

/* Safari 4.0 - 8.0 */
@-webkit-keyframes myani {
0%   {
visibility: visible;
  opacity: 1;
  }
100%   {
visibility: hidden;
  opacity: 0;
  }
}

@keyframes myani {
0%   {
visibility: visible;
  opacity: 1;
  }
100%   {
visibility: hidden;
  opacity: 0;
  }
}

/* media query */

@media (min-width: 768px) and (max-width: 1200px) and (orientation: landscape) {
  
.flex-glu {
    width: auto;
    max-width: 100%;  
  }
.flex-glu .glu-dx .glu-content.p-1 {
  bottom: 160px !important;
  left: 0 !important;
  }  
  
}


@media (min-width: 768px) and (max-width: 980px) {
  
.flex-glu {
  width: 100%;
  max-width: 100%;
  }
.flex-glu .glu-sx .glu-content h3, .flex-glu .glu-dx .glu-content h3 {
  font-size: 23px;
  }
.flex-glu .glu-sx .glu-content p, .flex-glu .glu-dx .glu-content p {
  font-size: 14px;
  }
.flex-glu .glu-sx .glu-content.p-1 {
  right: 20px !important;
  }
.flex-glu .glu-sx .glu-content.p-2 {
  bottom: -7px !important;
  right: 20px !important;
  }
.flex-glu .glu-dx .glu-content.p-1 {
  bottom: 120px !important;
  left: 0 !important;
  }
  
  
}


@media (min-width: 561px) and (max-width: 767px) {

  .flex-glu {
    width: 100%;
    max-width: 100%;
}

}


@media (max-width: 560px) {
  
.flex-glu .glu-center {
  flex-basis: 100%;
  position: absolute;
  right: -300px;
  top: -10px;
  z-index: -1;  
  }  
  .master-gl-unique .flex-glu {
  position: relative;
  }
.flex-glu {
  flex-flow: column wrap;
  margin: 30px 0;
  }

.flex-glu .glu-sx {
  text-align: left;
  }
.flex-glu .glu-sx .glu-content, .flex-glu .glu-dx .glu-content {
  position: relative !important;
  top: unset !important;
  bottom: unset !important;
  left: unset !important;
  right: unset !important;
  }
.flex-glu .glu-sx .glu-content, .flex-glu .glu-dx .glu-content {
  margin-bottom: 25px;
  }
.flex-glu .glu-sx .glu-content h3, .flex-glu .glu-dx .glu-content h3 {
  font-size: 23px;
  line-height: 1;
  }
.flex-glu .glu-sx .glu-content p, .flex-glu .glu-dx .glu-content p { 
  font-size: 14px;
  }  
.flex-glu .glu-dx .glu-content h3:before {
  display: none;
  }
.flex-glu .glu-dx .glu-content h3:after {
    content: url(https://cdn2.hubspot.net/hubfs/6067721/slettore_vuoto.png);
    position: absolute;
    margin-left: 20px;
    height: 28px;
    margin-top: 5px;
  right: 0;
}  
.flex-glu .glu-sx .glu-content h3:after {
  right: 0;
  }
  
}


@media (max-width: 460px) {
  
.flex-glu .glu-center img {
  height: 360px !important;
  width: auto;
  }
.flex-glu .glu-center {
    flex-basis: 100%;
    position: absolute;
    right: -260px;
    top: -10px;
    z-index: -1;
    max-height: 600px;
}  
  
}

.underline {
    border-bottom:2px Solid Black;  
}
<style>
  
.glu-content {
    left: -40px!important;
}
@media screen and (min-width: 950px) and (max-width: 1200px) {
.flex-glu {
    display: flex;
    width: 100%;
    max-width: 100%;
    margin: 30px auto 0;
}
}

@media screen and (min-width: 768px) and (max-width: 950px) {  

.glu-content {
    right: 0px!important;
    position: relative!important;
    top: 0px!important;
    bottom: px;
    left: 0px!important;
    display: table!important;
    width: 100%!important;
}
}
@media screen and (max-width: 768px) {
  .flex-glu .glu-sx {
  order: 2;
  }
  .flex-glu .glu-dx {
  order: 3;
  }
  .flex-glu .glu-center {
  order: 1;
  margin-bottom: 20px;
  }
.glu-content {
    right: 0px!important;
    position: relative!important;
    top: 0px!important;
    bottom: px;
    left: 0px!important;
    display: table!important;
    width: 100%!important;
    padding-bottom: 20px;
}
.flex-glu .glu-center {
    flex-basis: 100%;
    position: relative;
    right: 0px;
    top: 0px;
    z-index: -1;
    max-height: 600px;
}

.flex-glu .glu-sx, .flex-glu .glu-dx {
    flex-basis: 100%;
    display: flex;
    flex-flow: column;
    justify-content: space-evenly;
    position: relative;
  text-align: left;
}

.flex-glu {
    flex-flow: column;
    margin: 30px 0;
}
.flex-glu {
    display: flex;
    width: 100%!important;
    max-width: 100%!important;
    margin: 30px auto 0;
}
.flex-glu .glu-dx .glu-content h3:after {
    content: url(https://cdn2.hubspot.net/hubfs/6067721/slettore_vuoto.png);
    position: absolute;
    margin-left: 50px;
    height: 28px;
    margin-top: 10px;
    left: 50px;
    right: auto!important;
}
}
@media screen and (max-width:560px) {
body.prodotto #section1 .sec1-content p {
    max-width: 95%!important;
    margin: 0 auto;
}
  .flex-glu .glu-sx {
  order: 2;
  }
  .flex-glu .glu-dx {
  order: 3;
  }
  .flex-glu .glu-center {
  order: 1;
  margin-bottom: 20px;
  }
  .flex-glu .glu-dx .glu-content h3:after {
      margin-top: 0px!important;
  }
  .flex-glu .glu-center img {
      max-height: 360px !important;
      width: 100%!important;
  }
} 
  
</style>