.opening{
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  z-index: 999;
  background: #81197f;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #fff;
  padding: 45px;
  opacity: 0;
  pointer-events: none;
  font-family: professor, 'Arial', sans-serif;
  transition: opacity 0.6s;
}

.opening .wrapper{
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.6s 0.6s;
}

.opening.open{
  opacity: 1;
  pointer-events: all;
  transition: opacity 0s;
}

.opening.open .wrapper{
  opacity: 1;
}

.opening .opening-title{
  font-size: 42px;
  margin-bottom: 20px;
  line-height: 1;
}

.opening .opening-title .img-bird{
  display: block;
  height: 80px;
  width: 70px;
  background-color: #fff;
  mask-image: url('../images/oiseau.svg');
  -webkit-mask-image: url('../images/oiseau.svg');
  mask-size: contain;
  -webkit-mask-size: contain;
  mask-position: center center;
  -webkit-mask-position: center center;
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
  position: absolute;
  top: 70%;
  left: -90px;
  transition: top 2s 1.5s, left 2s 1.5s;
}

.opening.open .opening-title .img-bird{
  top: 30px;
  left: calc(100% - 90px);
}

.opening .opening-logo img,
.opening .opening-logo svg{
  width: 100%;
  height: auto;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.opening .opening-slogan{
  font-size: 26px;
  margin-top: 20px;
  line-height: 1;
  opacity: 0;
  transition: opacity 1s 0.8s;
}

.opening.open .opening-slogan{
  opacity: 1;
}

@media only screen and (min-width: 1025px) {
  .opening .opening-title{
    margin-left: -160px;
  }
  .opening .opening-title,
  .opening .opening-slogan{
    font-size: 54px;
  }
  .opening .opening-slogan{
    margin-top: 50px;
    opacity: 1;
    text-align: left;
    width: 980px;
    display: block;
  }
  .opening .opening-slogan .slogan-text{
    white-space: nowrap;
    width: 0;
    overflow: hidden;
    display: inline-block;
    transition: width 1.7s 1.2s;
  }
  .opening.open .opening-slogan .slogan-text{
    width: 100%;
  }
  .opening .opening-title .img-bird{
    height: 150px;
    width: 120px;
    top: 100%;
    left: 30px;
  }
  .opening.open .opening-title .img-bird{
    left: calc(50% + 80px);
  }
}