body, html {
    height: 100%;
    background-color: #FFFFFF;
    color: ##2D2D2D;
    font-family: 'Roboto', sans-serif;
}

h1 {
font-weight: 100;
text-align: center;
}

hr {
  margin-top: 5em;
  margin-bottom: 5em;
}

a:hover {
  color: grey;
}

.jumptarget::before {
  content:"";
  display:block;
  height:50px; /* fixed header height*/
  margin:-50px 0 0; /* negative fixed header height */
}

.clear, .clearfix{
        clear: both;
}

.logo {
  max-width: 80px;
  height: auto;
}

.background {
  color: white;
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../img/header.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  min-height: 100vh;
  height: auto;
  overflow-x: hidden;
  overflow-y: hidden;
}

.vyber {
  color: white;
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../img/vyber.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  min-height: 100vh;
  height: auto;
  overflow-x: hidden;
  overflow-y: hidden;
}

.vyber2 {
  color: white;
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../img/vyber2.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  min-height: 100vh;
  height: auto;
  overflow-x: hidden;
  overflow-y: hidden;
}

.nadpis {
  padding-top: 10vh;
  z-index: 0;
  padding-bottom: 10vh;
}

.nadpis_vyber {
  padding-top: 10vh;
  z-index: 0;
}

.button {
  margin-left: auto;
  margin-right: auto;
  left: 0;
  right: 0;
  padding: 0 0 20px 0;
}

.popis {
  padding-top: 30vh;
}

.main {
  position: absolute;
  max-width: 300px;
  z-index: 1;
  margin-left: auto;
  margin-right: auto;
  left: 0;
  right: 0;
}

.second {
  position: absolute;
  max-width: 300px;
  z-index: 0;
  margin-left: auto;
  margin-right: auto;
  left: 35%;
  right: 0;
}

.third {
  position: absolute;
  max-width: 300px;
  z-index: 0;
  margin-left: auto;
  margin-right: auto;
  left: 0;
  right: 35%;
}

.third:hover, .second:hover {
  z-index: 2;
}

.box {
  transition: all .8s ease-in-out;
  border-radius:10px;

}
.box:hover {
  box-shadow: 0 0 11px rgba(33,33,33,.5);
  transform: scale(1.05);
}

@media (max-width: 768px) {
.lead {
  text-align: justify;
}
.h2 {
  padding: 10 0 10 0;
  text-align: center;
}
hr {
display: none;
}
.text-danger {
  padding: 0 0 20 0;
}
.box {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
}