* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    font-size: 62.5%;
    scroll-behavior: smooth;
  }
  
  body {
    --main-color: #283526;
    --primry-color: #888888;
    --button-background: #4b709e;
    --primary-button-background: #fe7649;
    --background-color: #f0f7ff;
  }
  
  
  h1,
  h2 {
    font-family: Avenir LT Std;
    color: var(--main-color);
    
  }
  
  h4,
  h3 {
    font-family: "muli";
    color: var(--main-color);
  }
  
  h3 {
    font-weight: 750;
    font-size: 2.2rem;
    line-height: 6rem;
    text-transform: capitalize;
  }
  
  p,
  a,
  li,
  button {
    font-family: "muli";
    color: var(--primry-color);
  }
  
  p {
    font-size: 1.8rem;
    line-height: 150%;
    font-style: normal;
    font-weight: normal;
  }
  
  a {
    text-decoration: none;
    cursor: pointer;
  }
  
  li {
    list-style: none;
  }
  
  button {
    padding: 1rem 3rem;
    border-radius: 2rem;
    border: none;
    outline: none;
    line-height: 3.6rem;
    text-transform: capitalize;
    cursor: pointer;
    font-style: normal;
    font-weight: normal;
    font-size: 2rem;
  }
  
  /* -------------------------------------- our menu style 
  --------------------------------------------------------------------------- */
  header {
    padding: 0 20rem;
  }
  
  header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 12rem;
  }
  
  header nav .left-side-menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 50%;
    /* background-color: #e2efff; */
  }
  
  header nav .left-side-menu a img {
    width: 13rem;
    height: 5.5rem;
  }
  
  header nav .left-side-menu .sub-menu {
    height: inherit;
    display: flex;
    position: relative;
    z-index: 99;
  }
  
  header nav .left-side-menu .sub-menu a {
    margin-right: 4rem;
  }
  
  header nav .left-side-menu .sub-menu a li {
    font-size: 2rem;
    line-height: 3.6rem;
    text-transform: capitalize;
    transition: all 0.2s;
  }
  
  header nav .left-side-menu .sub-menu a li:hover {
    color: var(--button-background);
  }
  
  /* right side menu css style  */
  
  header .right-side-menu {
    width: 50%;
    display: flex;
    justify-content: end;
  }
  
  header .right-side-menu .sub-menu {
    width: 100%;
    height: inherit;
    display: flex;
    align-items: center;
    justify-content: flex-end;
  }
  
  header .right-side-menu .sub-menu a {
    margin-right: 8rem;
    padding: 0.7rem 2rem;
    background: rgba(255, 255, 255, 0.5);
    font-size: 2rem;
    cursor: pointer;
    border-radius: 1rem;
    position: relative;
    z-index: 9;
  }
  
  header .right-side-menu .sub-menu button {
    padding: 0.5rem 2.5rem;
    background-color: var(--button-background);
    color: #fff;
    position: relative;
    z-index: 9;
  }
  
  header .right-side-menu .sub-menu button:hover {
    background: #1b3d68;
  }
  
  header .right-side-menu .sub-menu a li:hover {
    color: var(--button-background);
  }