body, html {
  height: 100%;
  margin: 0px;
  /* background-color: #212529; */
  box-sizing: border-box;
}
a:link {
  text-decoration: none;
  color: white;
}
a:visited{
  text-decoration: none;
  color: white;
}
#padding-hero{
  padding-top: 10vh;
}
@media only screen and (max-width: 576px){
#Artek-Img{
  max-width: 100%;
  height:auto;
}
}
.center{
  text-align: center;
  align-content: center;
}
.img{
  max-width:50%;
}
.padding-top{
  padding-top: 4vh;
}
.padding-top2{
  padding-top: 8vh;
}
.padding-img{
  padding-top: 1vh;
}

@media only screen and (max-width: 576px){
  .oferty-h{
    font-size: 2rem;
    color: white;
    /* background-color: rgba(33,37,41,0.9); */
    background-image: url(../Img/Banner.jpg);
    text-shadow: 3px 3px 2px black;
    text-align: center;
    height: 3.5rem;
  }
  .oferty-p{
    font-size: 1.2rem;
    color: black;
    text-align: justify;
  }
  #hero{
    padding-top: 6vh;
    width: 100%;
    height:100%;
  }
}
@media only screen and (min-width: 576px){
  .oferty-h{
    font-size: 3rem;
    color: white;
    /* background-color: rgba(33,37,41,0.9); */
    background-image: url(../Img/Banner.jpg);
    background-size: cover;
    text-shadow: 4px 4px 3px black;
    text-align: center;
    height: 5rem;
  }
  .oferty-p{
    font-size: 1.5rem;
    color: black;
    text-align: justify;
  }
  #hero{
    padding-top: 5vh;
    width: 100%;
    height:100%;
  }

}

.gallery{
  text-align: center;
}
.gallery img{
  transition: 1s;
  border-radius: 7px;
}
.gallery img:hover{
  filter: grayscale(20%);
  transform: scale(1.1);
}


.row {
  display: flex;
  flex-wrap: wrap;
  padding: 0 4px;
}

/* Create four equal columns that sits next to each other */
.column {
  flex: 25%;
  max-width: 25%;
  padding: 0 4px;
}

.column img {
  margin-top: 8px;
  vertical-align: middle;
  width: 100%;
}

/* Responsive layout - makes a two column-layout instead of four columns */
@media screen and (max-width: 800px) {
  .column {
    flex: 50%;
    max-width: 50%;
  }
}

/* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
  .column {
    flex: 100%;
    max-width: 100%;
  }
}