.topPicture {
  top: var(--header_small_neg);
}
.grid-container {
  position: relative;
  top: var(--header_small_neg);
  display: grid;
  padding: 1px;
  width: 100%;
  align-items: center;
}

.grid-item {
  background-color: var(--color_header_small);
  opacity: 0.7;
  font-size: 2.5vh;
  text-align: left;
  color: white;
}

.grid-item div {
  padding: 5%;
}

.grid-itemb {
  font-size: 2vh;
  text-align: center;
}

.grid-item a {
  text-decoration: none;
  color: black;
  font-weight: 600;
}

.grid-item a.li:visited {
  color: black;
}

.container {
  position: relative;
  width: 100%;
}

.container img {
  width: 100%;
  height: auto;
}

.container .btn_ {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  color: white;
  font-weight: bold;
  padding: 12px 24px;
  border: none;
  cursor: pointer;
}

.container .btn_:hover {
  background-color: black;
  padding: 40px 60px;
}

/* Breite ab 800px (Desktop) */
@media screen and (min-width: 800px) {
  .grid-container {
    grid-template-columns: 50% 50%;
  }
  .container .btn_ {
    background-color: rgba(40, 40, 40, 0.4);
    font-size: 30px;
  }
}

/* Breite bis 799px (Mobile) */
@media screen and (max-width: 799px) {
  .grid-container {
    grid-template-columns: 100%;
  }
  .container .btn_ {
    background-color: #555;
    font-size: 20px;
    border-radius: 5px;
    opacity: 0.7;
  }
}