style.css

@import url('https://fonts.googleapis.com/css2?family=Kumbh+Sans:wght@400;700&display=swap');
*{
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
:root{
  --header: hsl(238, 29%, 16%);
  --hover-txt: hsl(14, 88%, 65%);
  --gradient-one: hsl(273, 75%, 66%);
  --gradient-two: hsl(240, 73%, 65%);
  --question: hsl(237, 12%, 33%);
  --answer: hsl(240, 6%, 50%);
  --hr: hsl(240, 5%, 91%);
}
body{
  min-height: 100vh;
  color: var(--answer);
  background: linear-gradient(to bottom, var(--gradient-one),var(--gradient-two));
  font-size: 12px;
  font-family: 'Kumbh Sans', sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.container{
  max-width: 425px; 
  background: white;
  display: grid;
  grid-template-columns: auto;
  -webkit-border-radius: 1.5rem;
  -moz-border-radius: 1.5rem;
  -ms-border-radius: 1.5rem;
  -o-border-radius: 1.5rem;
  border-radius: 1.5rem;
  box-shadow: 0 2rem 2rem 0 rgba(0, 0, 0, 0.2);
  margin: 1.5rem;
  margin-top: 10rem;
}
.container__image{
  height: 100px;
  background: url(./images/bg-pattern-mobile.svg) no-repeat;
  background-position: center bottom;
  position: relative;
}
.container__image picture img{
  position: absolute;
  top: -107px;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
  width: 250px;
  object-fit: none;
  object-position: 145% top;
}
.box{
  display: none;
}
.container__accordion{
  padding: 1.5rem;
  padding-bottom: 2rem;
}
.container__accordion h1{
  color: var(--header);
  font-size: 1.5rem;
  width: max-content;
  margin: 0 auto 1.5rem auto;
}
.accordion details summary{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
}
details .question{
  font-size: .813rem;
  -webkit-transition: all .2s linear;
  -moz-transition: all .2s linear;
  -ms-transition: all .2s linear;
  -o-transition: all .2s linear;
  transition: all .2s linear;
}
.question:hover{
  color: var(--hover-txt);
}
details .arrow{
  margin-top: .35rem;
}
details[open] .question{
  color: var(--question);
  font-weight: 700;
}
details[open] .arrow{
  -webkit-transform: rotate(180deg);
  -moz-transform: rotate(180deg);
  -ms-transform: rotate(180deg);
  -o-transform: rotate(180deg);
  transform: rotate(180deg);
  -webkit-transition: all .3s linear;
  -moz-transition: all .3s linear;
  -ms-transition: all .3s linear;
  -o-transition: all .3s linear;
  transition: all .3s linear;
}
details .answer{
  margin-top: 1rem;
  margin-right: 1rem;
  -webkit-animation: fadeFromBottom .5s linear;
  animation: fadeFromBottom .5s linear;
}
@keyframes fadeFromBottom{
  0%{
    opacity: 0;
    -webkit-transform: translateY(10px);
    -moz-transform: translateY(10px);
    -ms-transform: translateY(10px);
    -o-transform: translateY(10px);
    transform: translateY(10px);
  }
  100%{
    opacity: 1;
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
    transform: translateY(0);
  }
}
hr{
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid var(--hr);
  margin: 1rem 0;
}
footer{
  color: var(--header);
  font-size: 12px;
  text-align: center;
  margin: 3rem 0 1rem 0;
}
footer a{
  color: var(--hover-txt);
}
footer a:hover{
  text-decoration: none;
}
@media(min-width: 650px){
  body{
    font-size: 14px;
  }
  .container{
    margin-top: 8rem;
  }
  .container__accordion h1{
    font-size: 2rem;
    margin-bottom: 3rem;
  }
  details .question{
    font-size: 1rem;
  }
  footer{
    margin: 0 0 1.5rem 0;
  }
}
@media(min-width: 1150px){
  body{
    font-size: 1rem;
  }
  .container{
    max-width: 1000px;
    grid-template-columns: 1fr 1fr;
    margin-top: 0;
  }
  .container__image{
    max-width: 540px;
    height: 100%;
    background: url(./images/bg-pattern-desktop.svg) no-repeat;
    background-position: 100% 75%;
  }
  .container__image .picture-container{
    width: 450px;
    overflow: hidden;
  }
  .container__image picture img{
    position: initial;
    margin-top: 45px;
    margin-left: -100px;
    width: 540px;
    object-fit: unset;
    object-position: unset;
  }
  .box{
    display: block;
    position: absolute;
    top: 205px;
    left: -120px;
    -webkit-animation: bounce 2s linear infinite;
    animation: bounce 2s linear infinite;
}
  @keyframes bounce{
    0%{
      -webkit-transform: translateY(10px);
      -moz-transform: translateY(10px);
      -ms-transform: translateY(10px);
      -o-transform: translateY(10px);
      transform: translateY(10px);
    }
    50%{
      -webkit-transform: translateY(0);
      -moz-transform: translateY(0);
      -ms-transform: translateY(0);
      -o-transform: translateY(0);
      transform: translateY(0);
    }
    100%{
      -webkit-transform: translateY(10px);
      -moz-transform: translateY(10px);
      -ms-transform: translateY(10px);
      -o-transform: translateY(10px);
      transform: translateY(10px);
    }
  }
  .container__accordion{
    min-width: 550px;
    padding: 5rem;
  }
  .container__accordion h1{
    margin:  0 0 2.5rem 0;
  }
  details .question{
    font-size: 1.125rem;
  }
}