MOBILE PORTRAIT viewing on Slider Container not sticking to size

Hi

Using the MOBILE PORTRAIT VIEWING OR VIEWING ON MOBILE PHONES, the Slider container is cutting off the container below it which is cutting off the container’s image and leaving black black spaces between containers. At the very top of the page in http://www.teknifi.co.za/moving/sandton, I have 10 sliders. The following sliders are doing as follows:

Slider 1:-> Seems to be fine but the Teknifi logo is pushed all the way to the top and overlaps parts of the Slider image
Slider 2:-> Slider container Moves upwards but shows parts of the previous slider’s image (Slider 1) – on the actual mobile the logo at the top overlaps the text of the slider.
Slider 3:-> Slider container Moves downwards but leaves a blank black space at the bottom of the Slider container – on the actual mobile the logo at the top overlaps the text of the slider.
Slider 4:-> Slider container Moves upwards but leaves a blank black space at the bottom of the Slider Container
Slider 5:-> Slider container Moves upwards but leaves a blank black space at the bottom of the Slider Container – on the actual mobile the logo at the top overlaps the text of the slider.
Slider 6:-> Slider container Moves even more upwards and cuts off parts of the image in below container. Parts of Slider 5 Wallpaper image is visible in Slider 6 Container – – on the actual mobile the logo at the top overlaps the text of the slider.
Slider 7:-> Slider Container Moves downwards, image in below container is now visible. Parts of Slider 5 Wallpaper image is visible in the Slider 6 Container
Slider 8:-> Slider container moves Upwards and parts of Slider 5 and 7 wallpaper is visible at the bottom of the Slider container – – on the actual mobile the logo at the top overlaps the text of the slider.
Slider 9:-> Slider Container moves downwards and show blank black section between the 2 containers.
Slider 10:-> Slider Container moves upwards but shows a blank black section between the 2 containers. – – on the actual mobile the logo at the top overlaps the image of the slider (NOT shown on Mobile portrait viewing).

On MOBILE PORTRAIT VIEWING Logo STICK at the VERY TOP OF CONTAINER but does not show this when you use your mobile phone.

How do I fix the Slider container so that it is fixed and does not move up or down and does not show parts of the previous slider images.

In other previews such as the desktop Preview, iPad Preview and Laptop preview, it sticks and stays the same size and it is not cutting off images or showing/overlapping previous slider images.