/* BOTTOM */
.img-20{
 width:100%;
}
@media(min-width:768px){
 .img-20 img{
 width:20%;
 }
}

.page-header {
  color: #3498db;
  background-image: url(https://psnit2022.syskonf.pl/conf-data/PSNiT2023/images/podstona.jpg);
  background-position: center;
}
.page-header .page-header__tint{
    background-color: rgba(255, 255, 255, 0.8);
}

.navbar-nav li a { 0.91em; padding: 10px 10px; }

.footer {
    width: 100%;
    background: #2980b9;
    color: #fff;
    padding-top: 15px;
    padding-bottom: 0;
    text-align: left;
}


.navbar-inverse {
    background: #d3b021;
}

.yellow{
background: #d3b021;
}
.w40 img { max-width: 20%; }
.w30 img { max-width: 40%; }
.w60 img { max-width: 30%; }
.section-title {
    font-size: 32px;
}