html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: #f6f6f6;
}

.entete {
  position: relative;
  height: auto;
  padding: 10px 10px 80px 10px;
  margin-bottom: 50px;
}

.entete .bc-img {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
  opacity: 0.5;
}

.entete h1 {
  font-size: 40px;
  letter-spacing: 1.1px;
  color: #005694;
  text-align: center;
}

.entete p {
    position: relative;
  margin: 0;
  letter-spacing: 1.1px;
  text-align: center;
  color: white;
  z-index: 1;
  font-size: 17px;
}

.livre-num {
  margin-top: 30px;
  width: 100px;
  height: 150px;
  transition: 1500ms;
}

.livre-num:hover {
  transform: scale(1.2);
}

.articles {
  width: 70%;
  margin: 0 auto;
}

.article {
  background-color: white;
  border: 1px solid rgb(202, 198, 198);
  border-radius: 5px;
  padding: 10px;
  margin-bottom: 50px;
}

.article h1 {
  color: #005694;
  font-size: 22px;
  margin: 5px auto;
}

.article h3 {
  color: grey;
  font-size: 13px;
  margin: 5px auto 10px auto;
}

.article p {
  color: black;
  font-size: 16px;
  font-family: "Courier New", Courier, monospace;
  letter-spacing: 1.1px;
  line-height: 1.5em;
}

.article .img {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}

.sommaire {
  width: 90%;
  display: flex;
  flex-direction: column;
  text-align: center;
  justify-content: center;
  margin: 0 auto 50px auto;
  font-family: "Courier New", Courier, monospace;
}

.sommaire ul {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.sommaire li {
  margin-bottom: 5px;
}

.sommaire a {
  text-align: center;
  text-decoration: none;
}

.sommaire a:hover {
  color: green;
  text-decoration: underline;
}

.btn-scroll {
  height: 35px;
  width: 50px;
  position: fixed;
  right: 78px;
  bottom: 30px;
  cursor: pointer;
  opacity: 0;
  z-index: 1;
}

.btn-scroll img {
  display: block;
  width: 128px;
  opacity: 0;
  animation: 2s ease 0s 1 normal forwards running fleche-top;
}

@keyframes fleche-top {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

.twitter-article img {
  width: 18px;
  margin-left: 30px;
}

.titre-livre-num {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

.titre-livre-num  p{
    margin-left: 10px;
  }

  .arrondie {
    border-radius: 5px;
  }


  @media only screen and (max-width: 1000px) {
    .article p {
     text-align: center;
    }
    .article .img img{
        width: 100%;
       }
  }