*, *::after, *::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}

/* Generic */
body {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  background-color: #EDF2F0;
  color: #B4B4B4;
}

/**/
.main {
  position: relative;
  width: 1000px;
  height: 600px;
  padding: 25px;
  background-color: #FDFDFD;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 0;
  width: 600px;
  height: 100%;
  padding: 25px;
  background-color: #FDFDFD;
  transition: 1.25s;
}

.form {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  width: 100%;
  height: 100%;
}
.form__icon {
  object-fit: contain;
  width: 30px;
  margin: 0 5px;
  opacity: .5;
  transition: .15s;
}
.form__icon:hover {
  opacity: 1;
  transition: .15s;
  cursor: pointer;
}
.form__input {
  width: 350px;
  height: 40px;
  margin: 4px 0;
  padding-left: 25px;
  font-size: 13px;
  letter-spacing: .15px;
  border: none;
  outline: none;
  font-family: 'Montserrat', sans-serif;
  color: #B4B4B4;
  background-color: #F2F7F5;
}
.form__span {
  margin-top: 30px;
  margin-bottom: 12px;
}
.form__link {
  color: #2F2F2F;
  font-size: 15px;
  margin-top: 25px;
  border-bottom: 1px solid #B4B4B4;
  line-height: 2;
}

.title {
  font-size: 34px;
  font-weight: 700;
  line-height: 3;
  color: #34A89A;
}

.description {
  font-size: 14px;
  letter-spacing: .25px;
  text-align: center;
  line-height: 1.6;
}

.button {
  width: 200px;
  height: 55px;
  border-radius: 27.5px;
  margin-top: 50px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1.15px;
  background-color: #44b390;
  color: #FDFDFD;
  border: 2px solid #FDFDFD;
  outline: none;
}

/**/
.a-container {
  z-index: 100;
  left: calc(100% - 600px );
}

.b-container {
  left: calc(100% - 600px );
  z-index: 0;
}

.switch {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 400px;
  padding: 50px;
  z-index: 200;
  transition: 1.25s;
  background-image: linear-gradient(45deg, #44b390, #34A89A);
  overflow: hidden;
}
.switch__circle {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background-image: linear-gradient(-45deg, #3da181, #34A89A);
  bottom: -60%;
  left: -60%;
  transition: 1.25s;
}
.switch__circle--t {
  top: -30%;
  left: 60%;
  width: 300px;
  height: 300px;
}
.switch__container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  position: absolute;
  width: 400px;
  padding: 50px 55px;
  transition: 1.25s;
}
.switch__title, .switch__description, .switch__button {
  color: #FDFDFD;
}
.switch__button {
  border: 2px solid #FDFDFD;
  cursor: pointer;
}
.switch__button:hover {
  transform: scale(1.015);
  transition: .15s;
}
.switch__button:active {
  transform: scale(0.9);
  transition: .15s;
}

/**/
.is-txr {
  left: calc(100% - 400px );
  transition: 1.25s;
  transform-origin: left;
}

.is-txl {
  left: 0;
  transition: 1.25s;
  transform-origin: right;
}

.is-z200 {
  z-index: 200;
  transition: 1.25s;
}

.is-hidden {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  transition: 1.25s;
}

.is-gx {
  animation: is-gx 1.25s;
}

@keyframes is-gx {
  0%, 10%, 100% {
    width: 400px;
  }
  30%, 50% {
    width: 500px;
  }
}