* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    color: #1e1e1e;
    padding: 20px;
}

header {
    text-align: center;
}

nav {
  display: flex;
  justify-content: space-between;
  padding-bottom: 80px;
  }
  
section {
  padding-top: 100px;
}

.main_logo {
  max-width: 100px;
  }

h1 {
    text-transform: uppercase;
    margin-bottom: 32px;
    }
    
.text_main {
  max-width: 700px;
  padding-bottom: 40px;
  margin: 0 auto;
  }
  
.btn_main_position {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.btn_main {
    background: #1f1f1f;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border: solid 1px #1f1f1f;
    border-radius: 5px;
    transition: background-color 0.3s;
    cursor: pointer; 
    text-transform: uppercase;
}

.btn_main:hover {
    background: white; 
    color: #1f1f1f; 
    border: solid 1px #d0d0d0;
}

.title_card {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding-bottom: 60px;
}

h3 {
  text-align: center;
  text-transform: uppercase;
  margin-bottom: 20px;
  }

.card_position {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 40px;
  justify-content: space-between;
  }
  
.card_main {
  padding: 20px;
  border: solid 1px #d0d0d0;
  border-radius: 10px;
  }
  
.card_img {
  width: 100px;
  display: flex;
  margin: 0 auto;
  padding-bottom: 20px;
  
  }
  
.card_text {
  text-align: center;
  color: #1e1e1ee0;
  }
  
.title_about {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 60px;
  padding-top: 100px;
}
  
.about_position {
  max-width: 800px;
  margin: 0 auto;
  }
  
.about_f {
  overflow: hidden;
  border-bottom: solid 1px #d0d0d0;
  padding-bottom: 10px;
  margin-bottom: 30px;
  }
  
.about_img {
  float: left;
  width: 30px;
  margin-right: 10px;
  }
  
.about_text {
  max-width: 800px;
  }
  
h4 {
  font-size: 24px;
  text-align: center;
  padding-bottom: 40px;
}

.text_foot {
  margin: 0 auto;
  text-align: center;
  max-width: 800px;
  margin-bottom: 40px;
}

.btn_foot {
  display: flex;
  justify-content: center;
}

footer {
  display: flex;
  justify-content: center; 
  }

.copy {
    padding: 40px;
    width: 100%;
    text-align: center;
}

@media (max-width: 800px) {
    
.card_position {
  grid-template-columns: auto;
}

.about_position {
  
}
}