header {
    width: 100%;
    padding: 28px 8%;
}

#navbar {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#nav_logo {
    font-size: 24px;
    color: #000000;
}

.logo {
    width: 20rem;
    margin-top: -70px;
}

.btn-default1 {
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -100px;
    background-color: #ffcb45;
    border-radius: 12px;
    padding: 10px 14px;
    font-weight: 600;
    box-shadow: 0px 0px 10px 2px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: background-color .3s ease;
}

.btn-default1:hover {
    background-color: #f8d477;
}

#nav_list {
    display: flex;
    list-style: none;
    gap: 48px;
    margin-top: -100px;
    margin-left: -100px;
}

.button-one {
    text-decoration: none;
    margin-top: 50px;
}

.nav-item a {
  position: relative;
  text-decoration: none;
  color: #1d1d1dad;
  font-weight: 600;
  padding-bottom: 5px;
}

.nav-item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0%;
  height: 3px;
  background-color: #ffe100;
  transition: width 0.3s ease-in-out;
}

.nav-item a:hover::after {
  width: 100%;
}

.nav-item.active a::after {
  border-bottom: none;
}


#mobile_btn {
    display: none;
}

#mobile_about {
    display: none;
}

@media screen and (max-width: 1170px) {
    #nav_list,
    #navbar .btn-default1 {
        display: none;
    }

    #mobile_btn {
        display: block;
        border: none;
        background-color: transparent;
        font-size: 1.5rem;
        cursor: pointer;
    }

    #mobile_about.active {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    #mobile_nav_list {
        display: flex;
        flex-direction: column;
        gap: 12px;
        margin: 12px 0px;
    }

    #mobile_nav_list .nav-item {
        list-style: none;
        text-align: center;
    }
}