*,
::before,
::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Montserrat', sans-serif;
}

body {
  cursor: url('Cursor.png'), auto;
}

img {
  width: 100%;
  height: 100%;
}

h1,
h2,
h3 {
  margin: 0;
}


.header {
  width: 100%;
  padding: 15px 0;


  display: flex;
  justify-content: center;
  align-items: center;

  font-size: 24px;
  font-weight: 300;
  color: gray;
}

.hero {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  max-width: 1230px;
  width: 100%;
  margin: 0 auto;
  padding: 0 15px;
}

.hero__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax( 290px,1fr));
  grid-gap: 20px;
}


.hero__about {
  display: flex;
  flex-direction: column;
  justify-content: center;

}

.hero__title {
  font-size: 48px;
  line-height: 1.1;

  margin-bottom: 20px;
}

.hero__prof {
  color: #4facfe;
  white-space: nowrap;
}

.hero__subtitle {
  font-size: 32px;
  font-weight: 400;
}

.hero__links {
  display: flex;
}

.hero__link {
  margin-right: 10px;

  font-size: 30px;
  color: #000;
}

.hero__link:hover {
  color: #4facfe;
}



.hero__box {
  max-width: 500px;
  justify-self: center;
  overflow: hidden;
  border: 10px solid #fff;

  background-image: linear-gradient(-225deg, #473B7B 0%, #3584A7 51%, #30D2BE 100%);

  animation: ava-animate 5s infinite alternate;
  box-shadow: 2px 5px 10px rgba(0, 0, 0, .5);
}

.hero__box-img {
  animation: ava-bg 5s infinite alternate;
}

@media screen and (max-width: 978px) {
  .hero {
    padding-top: 30px;
  }

  .hero__container {
    grid-row-gap: 20px;
  }

  .hero__title {
    font-size: 28px;
    margin-bottom: 10px;
  }

  .hero__subtitle {
    font-size: 22px;
    font-weight: 400;
  }

  .hero__description {
    font-size: 14px;
  }

  .hero__about {
    text-align: center;
  }

  .hero__links {
    justify-content: center;
  }

  .hero__box {
    max-width: 350px;
    justify-self: center;
  }
}



@keyframes ava-animate {
  0% {
    border-radius: 57% 43% 52% 48% / 34% 24% 76% 66%  ;
  }

  40% {
    border-radius: 84% 16% 76% 24% / 11% 67% 33% 89% ;
  }

  60% {
    border-radius: 100% 0% 43% 57% / 45% 85% 15% 55% ;
  }

  100% {
    border-radius: 31% 69% 7% 93% / 69% 22% 78% 31%  ;
  }
}

@keyframes ava-bg {
  from {
    backdrop-filter: hue-rotate(0);
  }

  to {
    backdrop-filter: hue-rotate(90deg);
  }
}