style.css

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: #fafafa;
  font-family: Rubik, sans-serif;
  font-size: 16px;
  position: relative;
  height: 100vh;
  /*overflow-x: hidden;*/
}

body::before {
  width: 380px;
  height: 480px;
  border-radius: 0 0 190px 190px;
  background: linear-gradient(225deg, hsl(293, 100%, 63%), hsl(264, 100%, 61%));
  -webkit-transform: translateX(min(270px, calc(-66% + 11vw)));
          transform: translateX(min(270px, calc(-66% + 11vw)));
  content: "";
  display: block;
  position: absolute;
}

body::after {
  width: 380px;
  height: 480px;
  border-radius: 0 0 190px 190px;
  -webkit-transform: rotate(180deg) translateX(calc(-66% + 11vw));
          transform: rotate(180deg) translateX(calc(-66% + 11vw));
  margin-left: auto;
  background: hsl(270, 20%, 96%);
  bottom: 0;
  right: 0;
  content: "";
  display: block;
  position: absolute;
  z-index: -1;
}
/*
#container{
  display:flex;
  justify-content: space-evenly;
}*/

#phone {
  position: relative;
  background: #fff;
  top: 50%;
  left: 50%;
  width: 280px;
  height: 560px;
  -webkit-transform: translate(-50%, 3%);
          transform: translate(-50%, 3%);
  border-radius: 33px;
  padding: 18px;
  box-shadow: 7px 7px 42px #777;
}

#appHeader {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 296px;
  height: 72px;
  background: -webkit-gradient(linear, right top, left top, from(hsl(293, 100%, 63%)), to(hsl(264, 100%, 61%)));
  background: linear-gradient(270deg, hsl(293, 100%, 63%), hsl(264, 100%, 61%));
  border-radius: 26px 26px 8px 8px;
  z-index: 2;
}

#appHeader #arrow {
  width: 30px;
  margin-top: 30px;
  margin-left: 7px;
}

#appHeader #avatar {
  width: 33px;
  border: #fff solid 2px;
  border-radius: 20px;
}

#appHeader #headingWrap {
  -webkit-transform: translateX(85px) translateY(-42px);
          transform: translateX(85px) translateY(-42px);
}

#appHeader #userName {
  font-weight: 500;
  font-size: 14px;
  color: #fff;
}

#appHeader #status {
  font-size: 11px;
  color: hsl(276, 100%, 81%);
}

#appHeader #kebab {
  width: 6px;
  -webkit-transform: translateX(272px) translateY(-72px);
          transform: translateX(272px) translateY(-72px);
}

#kebab div {
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 8px;
  margin-bottom: 3px;
}

#appBody {
  background: hsl(270, 20%, 96%);
  width: 100%;
  height: 100%;
  border-radius: 26px;
  padding: 8px;
  -webkit-transform: translateX(-8px) translateY(-9px);
          transform: translateX(-8px) translateY(-9px);
}

#appHeader:before {
  position: absolute;
  background: #fff;
  content: "";
  width: 150px;
  height: 23px;
  z-index: 77;
  margin-left: 73px;
  -webkit-transform: translateY(-3px);
          transform: translateY(-3px);
  border-radius: 0 0 15px 15px;
}

.textBubble {
  position: absolute;
  padding: 8px;
  /* border-radius: 14px 14px 14px 9px;*/
  max-width: 150px;
  font-size: 11px;
}

.textBubble.left {
  background: #ebe5f7;
  color: hsl(276, 55%, 52%);
  border-radius: 14px 14px 14px 7px;
}

.textBubble.right {
  background: #fff;
  border-radius: 14px 14px 7px 14px;
  box-shadow: 0px 5px 12px #ccc;
}

#tb1 {
  -webkit-transform: translateY(76px);
          transform: translateY(76px);
}

#tb2 {
  -webkit-transform: translateY(130px);
          transform: translateY(130px);
}

#photosWrap {
  -webkit-transform: translateX(112px) translateY(184px);
          transform: translateX(112px) translateY(184px);
}

#photosWrap img {
  border-radius: 12px;
  width: 50px;
  margin-left: 3px;
}

#tb3 {
  -webkit-transform: translateX(112px) translateY(191px);
          transform: translateX(112px) translateY(191px);
}

#tb4 {
  -webkit-transform: translateX(174px) translateY(246px);
          transform: translateX(174px) translateY(246px);
}

#tb5 {
  -webkit-transform: translateY(282px);
          transform: translateY(282px);
}

#tb6,
#tb7 {
  -webkit-transform: translateY(346px);
          transform: translateY(346px);
  color: #fff;
  background: -webkit-gradient(linear, left top, right top, from(hsl(293, 100%, 63%)), to(hsl(264, 100%, 61%)));
  background: linear-gradient(90deg, hsl(293, 100%, 63%), hsl(264, 100%, 61%));
  width: 210px;
  line-height: 17px;
  position: relative;
  padding: 12px;
}

#tb6 .ring,
#tb7 .ring {
  display: inline-block;
  box-sizing: border-box;
  border: hsl(289, 100%, 72%) solid 1px;
  border-radius: 10px;
  width: 18px;
  height: 18px;
  margin-right: 8px;
}

#tb6 span,
#tb7 span {
  position: absolute;
  right: 8px;
  font-weight: 700;
  font-size: 16px;
}

#tb7 {
  -webkit-transform: translateY(356px);
          transform: translateY(356px);
}
/* not an actual input*/
#textInput {
  position: relative;
  margin: auto;
  background: #fff;
  width: 90%;
  height: 32px;
  line-height: 32px;
  font-size: 11px;
  -webkit-transform: translateY(370px);
          transform: translateY(370px);
  padding: 7px 7px 7px 18px;
  border-radius: 20px;
  color: hsl(206, 6%, 79%);
}

#textInput a {
  position: absolute;
  right: 7px;
  display: inline-block;
  box-sizing: border-box;
  background: hsl(271, 36%, 24%);
  width: 32px;
  height: 32px;
  border-radius: 17px;
}

#textInput a img {
  width: 20px;
  -webkit-transform: translateX(7px) translateY(3px) rotate(180deg);
          transform: translateX(7px) translateY(3px) rotate(180deg);
}

#textWrap {
  margin: 50px auto;
  text-align: center;
  width: 320px;
}

#h1 {
  font-weight: 500;
  font-size: 34px;
  color: hsl(271, 36%, 24%);
}

#textWrap p {
  font-size: 16px;
  color: hsl(270, 7%, 64%);
}

@media (min-width: 800px) {
  #container {
    margin: auto;
    display: -webkit-box;
    display: flex;
    -webkit-box-pack: space-evenly;
            justify-content: space-evenly;
    -webkit-box-align: center;
            align-items: center;
    width: min(1000px, 80%);
    height: 100%;
  }
  #phone {
    top: 0;
    left: 0;
    -webkit-transform: translate(0, 3%);
            transform: translate(0, 3%);
    width: 280px;
    height: 560px;
  }
  #textWrap {
    text-align: left;
    width: 450px;
    margin-right: 0;
  }
  #h1 {
    font-size: 42.5px;
  }
  #textWrap p {
    font-size: 20px;
  }
}