style.css

body {
  font-family: apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
    "Helvetica Neue", Arial, sans-serif;
  scroll-behavior: smooth;
}

a {
  text-decoration: none;
}

main {
  background-color: #eee;
  margin: 30px 8px;
  padding: 15px;
  border-radius: 5px;
}
#title {
  text-align: center;
  margin-top: 30px;
}
.h3 {
  text-align: center;
}

h3 a:hover {
  text-decoration: underline;
}

figure {
  padding: 50px;
  background-color: white;
  text-align: center;
  border-radius: 20px;
  margin: 0;
  overflow-y: hidden;
}
#image {
  width: 90%;
  height: auto;
  transition: transform 0.3s ease;
  margin-bottom: 35px;
}

#image:hover {
  transform: scale(1.1);
  filter: brightness(1.2);
}

.headline {
  margin: 50px 0;
  text-align: center;
}
ul {
  max-width: 550px;
  margin: 0 auto 50px auto;
  line-height: 2;
}
.bloc-note {
  max-width: 550px;
  margin: 0 auto 50px auto;
}
footer {
  text-align: center;
}

footer button {
  width: 150px;
  height: 50px;
  border-radius: 7px;
  border: none;
  background: #000;
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  transition: all 0.6s;
}
button:hover {
  transform: scale(1.1);
  background: #333;
}

button a {
  color: #fff;
}