.header {
  text-align: center;
  background-color: #fff;
  width: 100%;
  height: auto;
  padding: 10px;
}
.logo {
  width: 50px;
  display: inline-block;
}
.heading-logo {
  display: none;
}

.content {
  text-align: center;
  position: relative;
  margin: 0 auto;
  padding: 10px;
  width: 50%;
}

.image {
  width: 100%;
  height: auto;
  border-radius: 20%;
}

.button {
  position: absolute;
  bottom: 25px;
  right: 20px;
  background-color: green;
  color: #fff;
  padding: 10px;
  border-radius: 4px;
  cursor: pointer;
}

.article {
  text-align: center;
  width: 50%;
  margin: 0 auto;
  padding: 10px;
}
.heading {
  font-size: 26px;
  font-wight: 800;
}

.footer {
  font-size: 15px;
  text-align: center;
  background-color: #007fff;
  padding: 10px;
  color: #ffffff;
}

/* Mobilní zobrazení */

@media only screen and (max-width: 576px) {
  .heading-logo {
    /* šchovaný logo */
    display: block;
  }
}