.sec1{
    max-width: 1500px;
    margin: auto;
    height: 400px;
    background:linear-gradient(rgba(0, 0, 0, 0.681),rgba(0, 0, 0, 0.401)), url(image/slider.html\ air\ ticketing4.jpg);
    background-position: center;
    background-size: 100% 100%;
    text-align: center;
    padding-top: 250px;
    color: white;
    font-size: 40px;
}



.sec2{
    /* margin-top: 50px; */
    padding: 50px 40px;
    background-image: linear-gradient(to top left, rgba(7, 164, 151, 0.371),rgba(0, 0, 0, 0),rgba(201, 35, 216, 0.235));


}
.sec2 p{
    font-size: 20px;
    margin-top: 10px;
}

.sec3{
max-width: 1500px;
margin: auto;
padding: 50px 40px;
display: flex;
flex-wrap: wrap;
background-image: linear-gradient(to top left, rgba(7, 164, 151, 0),rgba(0, 0, 0, 0),rgba(201, 35, 216, 0));

}
.sec3 .text{
width: 48%;
padding: 20px;
background-image: linear-gradient(to top left, rgba(20, 7, 164, 0.23),rgba(0, 0, 0, 0),rgba(14, 125, 73, 0.32));

}
.sec3 .img{
width: 48%;
}
.sec3 .img img{
width: 100%;
height: 100%;
}
.sec3 p{
font-size: 20px;
margin-top: 10px;
}

 
  @media screen and (max-width: 900px){
  
    .col-xl-3{
      width: 100%;
      margin-left: 10px;
      
    }

    .sec1{
        font-size: 35px;
        padding-top: 100px;
    }


    .sec3{
        padding: 20px;
    }
    .sec3 .text{
        width: 100%;
    }


    .sec3 .img{
        width: 100%;
      }
    }