head{
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.navigation
{
  display: flex;
  position: relative;
  background : url(twingo.png);
  height : 300px;
  width: 500px;
}

body{
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.gallery_Preview
{
  display: inline-block;
  border: 5px solid grey;
  margin: 5px;
  width : 400px;
}

.gallery_Preview:hover
{
  border: 5px solid red;
}
.gallery_Preview img
{
  width : 100%;
  height : auto;
}